Abstract: A tool for providing improved reach and torque is disclosed. The tool includes a wrench including a head, a wrench body coupled to said head, and a connector coupled to said wrench body distal to said head. The tool includes an extension including with an inserter and an extension body. Said inserter is configured to mate with said connector, and said extension increases the reach and torque of said tool. The wrench head may include any size or dimension.

Abstract: A tool including a bit including a detent portion in the form of a detent ball and a bias member adapted to provide a biasing force to the detent ball in an outward direction. The detent ball is adapted to engage a receiving portion in a socket to securely couple the bit to the socket. The biasing force may be sufficient to prevent the bit from being accidentally removed from coupling to the socket by hand after assembly. In one aspect, the bit may be removed from the socket upon application of an axial force of about 40 pounds or greater.

Abstract: A safety block that includes a drive member on a lower face for attaching a socket or other tooling for applying torque to a screw, bolt, nut or other fastener. The safety block has a pair of drive pockets in an upper face of the block on opposed sides of a drive axis that passes through the drive member. The pair of drive pockets are sized and arranged to accept a square-shaped driver of a separately-provided wrench or breaker bar, to permit applying opposed, co-directional torque upon the socket or other tooling, thereby obviating the need to use a breaker bar or similar makeshift arrangement for breaking loose nuts and bolts in the field or on machinery.

Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.

Abstract: Coupling mechanisms for engaging and releasing a tool attachment such as a socket from a drive element include an engaging element and an actuating element. The actuating element can include a collar or other manually-accessible part, and various features allow for a relatively small outside diameter for the collar or other part. These features include configuring the actuating element to contact the engaging element within the drive element, placing the biasing elements within the drive element, and forming guides for parts of the actuating element within the drive element. Also, the engaging element can move along a direction that is oriented at an oblique angle to the longitudinal axis of the drive element, in whole or in part. The engaging element can have a first part that moves obliquely in the drive element and a second part that moves radially in the drive element to engage the tool attachment.

Abstract: A multi-bit tool comprises a housing having a bit chuck with a bit-receiving opening. A substantially rigid main frame member defines a plurality of longitudinal channels and is disposed within the housing such that each of the plurality of longitudinal channels is generally aligned along the longitudinal axis of the multi-bit tool. A plurality of spring loaded actuator mechanisms are mounted in rigidly retained relation within one channel of the frame member. Each spring loaded actuator mechanism has a carriage member movable between a rearward position and a forward position, and a trigger member movable between a rest position, a forward triggering position and a rearward triggering position. The carriage member is moved to its rearward position by movement of the trigger member to its rearward triggering position and the carriage member is moved to its forward position by movement of the trigger member to its forward triggering position.

Abstract: A tool having a flexible extension shaft, a first end and, a second end and capable of being bent about its axis. The tool transfers rotary motion from a device to an implement. Both of the ends may be capable of independently being bent about the axis. The shaft may include a male member and a female member for a kit. Further, one end of the tool may include a rotatable member having a first and second implement.

Abstract: A wrench adapter includes an adapter shaft having an adapter tip located at its one end and attachable to a wrench socket and a wrench adapter head located at its other end and defining therein a driven hole for receiving a tool bit, and a first wrench driven portion and a second wrench driven portion disposed at the periphery of the wrench adapter head at different elevations and drivable by open-end wrenches or adjustable wrenches of different sizes.

Abstract: A universal joint includes first and second parts interconnected by a coupling element, and a coupling mechanism for detachably engaging tool attachments such as sockets. The disclosed coupling mechanisms include an engaging element and an actuating element. The engaging element can include a pin, and the pin can be oriented either obliquely or longitudinally in the drive stud of the universal joint. The actuating element can include a collar and a central portion that crosses the central longitudinal axis of the drive stud. The central portion can be offset along the longitudinal axis toward the coupling element, and the actuating element can be configured to extend into an aperture formed by the coupling element and the second part of the universal joint.

Abstract: A telescopic handle for a hand tool includes a main shank connected to a tool head at a distal end and insertable into an outer sleeve which a user grips. The main shank has a plurality of axially spaced retained regions such that a radially movable retaining member is engageable with a selected one of the retained regions. A key-and-keyway mechanism is disposed to guide axial movement of the outer sleeve and to guard against rotation of the outer sleeve relative to the main shank so as to permit delivery of an appropriate torque to the main shank. An operating member is disposed on and movable axially relative to the outer sleeve to radially move the retaining member.

Abstract: A quick-release bit adapter includes a body having first and second ends spaced along a longitudinal axis. The body includes a driving hole extending from the first end towards the second end along the longitudinal axis. The body further includes a sliding groove in communication with the driving hole and intermediate the driving hole and the second end along the longitudinal axis. A through-hole extends from an outer periphery of the first end through the sliding groove. A bit received in the driving hole abuts and is stopped by at least one protrusion extending inward from an inner periphery of the driving hole towards the longitudinal axis. A magnetic device is slideably received in the sliding groove and controllable by a user through the through-hole to slide along the longitudinal axis between two positions to engage with or disengage from the bit.

Abstract: A hand tool includes a shank, a sleeve, a control member, a pressing member, an end piece and a resilient member. The shank has multiple annular grooves. The control member and the resilient member are located in the chamber of the sleeve and the end piece closes the sleeve. The shank extends through the control member and the end piece. When the pressing member is not applied by a force, the sleeve can only rotate relative to the shank and cannot move relative to the shank. When the sleeve is applied by a force, the sleeve can move relative to the shank.

Abstract: A telescoping extension tool for use in combination with a socket wrench is disclosed herein. Embodiments of the telescoping extension tool are installed onto the socket wrench to extend the reach of the socket used in combination with the socket wrench. Because the extension tool is telescoping, the reach of the telescoping extension tool is infinitely adjustable between the shortest extension and the longest extension of the telescoping tool. Additionally, the external surfaces of certain components of embodiments of the present invention allow the use of other tools designed to grip hexagonal shapes to supply the rotation and torque necessary to loosen or tighten fasteners.

Abstract: Apparatus and methods are provided to remove biopsy specimens from a bone and/or associated bone marrow using a powered drive and an intraosseous (IO) needle set. The powered driver may rotate the IO needle set at an optimum speed to obtain a biopsy sample of bone and/or bone marrow. Apparatus and methods may also be provided for aspiration of bone marrow and/or stem cell transplant procedures. The apparatus may include a powered driver, a coupler assembly, a containment bag or sterile sleeve and various IO needles and IO needle sets with associated hubs and/or hub assemblies. Each IO needle set may include a cannula or catheter and an associated trocar stylet with respective tips operable to penetrate a bone and/or bone marrow with minimum trauma to a patient. Each hub assembly may be used to releasably dispose a respective stylet within an associated generally hollow cannula. Some coupler assemblies and/or hub assemblies may also be used with manual drivers.

Abstract: A socket holder may be designed as part of a socket extension or built into a socket holding end of a ratchet. The socket holder may have a mechanism to hold the socket at a conventional position. However, unlike conventional socket holders, the present invention may allow the socket to push past the holding mechanism, allowing the socket holder to fill an inside of the socket and provide pressure on the head of the bolt being applied by the socket. A magnet may be disposed on the end of the socket holder facing the bolt to help secure the bolt within the socket holder.

Abstract: The present invention is provides a fitting assembly for a hand tool with enhanced snapping capability, operation smoothness, and reduced manufacturing cost. The fitting assembly contains a body and one end of the body has a fitting member. The fitting member has a radial through channel connecting two opposing sides of the fitting member. Two steel balls and a conical spring in between are housed in the through channel. By simultaneously compressing the both ends of the conical spring through the steel balls on the fitting member, and as the smaller rings of the conical spring are squeezed into the larger rings to effectively reduce the length of the compressed conical spring and to align the steel balls' engagement direction and the axial direction of the conical spring, the fitting assembly provides enhanced snapping capability, operation smoothness in connection and detachment, and reduced manufacturing cost of the hand tool.

Abstract: A quick release extension rod with a positioning structure comprises a body, a return member, an inserting rod, an even number of balls, a positioning ring, a control ring assembly, four elastic members and a C-shaped retainer. The balls are disposed on the connecting head of the inserting rod, so that the radial interval between the socket and the connecting head of the base of the quick release extension rod can be evenly distributed. When the socket rotates, the arrangement of an even number of balls can reduce the possibility of the asymmetrical-center-of-gravity caused oscillation. The four elastic members are disposed between the control ring assembly and the body to push the socket can be abutted against the control ring assembly to delimitate the axial interval, which further stabilize the center of gravity of rotation of the socket while preventing the occurrence of oscillation of the socket.

Abstract: A driver accessory includes a housing having a first housing portion and a second housing portion movable relative to the first housing portion, an input shaft at least partially received in the first housing portion and defining a first axis, and an output shaft at least partially received in the second housing portion and defining a second axis. The output shaft is supportable by the housing in a first position relative to the input shaft in which the first and second axes are substantially parallel, and in a second position relative to the input shaft in which the first and second axes are non-parallel. The driver accessory also includes a locking mechanism operable to secure the second housing portion relative to the first housing portion when the output shaft is in the first position and the second position relative to the input shaft.

Abstract: A torque limiting engine rotation tool for rotating a crankshaft of an engine, where the engine rotation tool is configured to be operated with a socket wrench or non-impacting tool and is configured to engage an accessory drive pulley bolt or any other bolt that causes the crankshaft to rotate, includes a socket body. The socket body has a driving portion coupled to a bolt-torquing portion with a shear pin. A receiving recess is defined by the driving portion and is configured to receive the socket wrench or non-impacting tool. A female socket recess is defined by the bolt-torquing portion and is configured to engage the bolt. The amount of torque applied by the socket wrench or non-impacting tool to the bolt is limited by the shear strength of the shear pin.

Abstract: A tool head includes a connecting component, a driving component, and a spacer. The connecting component includes a receiving end defining a tight-fit section and a non tight-fit section. The driving component is insertably fitted in the receiving end of the connecting component, and includes a body defining first and second engaging sections. The second engaging section is received in the non tight-fit section. The spacer includes first and second tight-fit edges, with the first engaging section tightly fit in the tight-fit section by the spacer, with the first tight-fit edge tightly abutting against a wall delimiting the tight-fit section and the second tight-fit edge tightly abutting against a wall delimiting first engaging section, respectively.

Abstract: A convertible driving tool includes a tool handle having a carrier, a tool head having a shank for engaging into a compartment of the carrier, and a latch device includes a shaft engageable through the shank and the carrier, and the shaft includes a catch member for being engaged between the shank and the carrier for selectively latching the shank to the carrier, the catch member of the latch device is disengageble from the shank for allowing the tool head to be easily and quickly and readily attached or coupled to the tool handle and to be disengaged from the tool handle, and for allowing the driving tool head to be easily and quickly and readily changed or replaced with the new ones.

Abstract: A tool having a collar disposed rearward of a movable sleeve or tool attachment so as to deflect objects away from the rearward edge of the sleeve or tool attachment when in the tool attachment lock position thereby preventing inadvertent release of the tool attachment during use.

Abstract: An adapter for a socket wrench includes a shaft with two socket drivers disposed along the shaft. Each of the socket drivers can, independent from one another, rotate around the shaft and slide along the shaft in either direction. There are two stops at each end of the shaft to prevent the socket drivers from falling off the shaft. The socket drivers can be attached to a variety of different socket accessories and sockets so that torque applied to one of the socket drivers can be multiplied and exerted at the end of the other socket driver. One particular embodiment includes a shaft and pedal that aids a person in correctly and easily tightening or loosening lug nuts.

Abstract: A tool holder device includes a number of slots formed in a housing, a receptacle having two conduits perpendicular to each other, the housing has an end portion engaged into one of the conduits, a spindle is rotatably engaged in the housing, a shaft is rotatably engaged in the receptacle and has a bevel gear meshed with a bevel gear of the spindle, a barrel is attached onto the housing and has two ears, a handle has a cam member pivotally mounted to the ears of the barrel, the cam member is engageable with either of the slots of the housing for anchoring the handle and the barrel to the housing at selected angular positions when the handle is pivoted relative to the housing to the perpendicular working position.

Abstract: An open end wrench includes first and second jaws. The first jaw includes an arcuate sliding groove having two support walls and an arcuate sliding wall between the support walls. A slide is slideably received in the sliding groove and includes an arcuate sliding face slideable along the sliding wall. Two wings respectively extend from top and bottom faces of the slide. Top and bottom extension faces extend from a wrenching face of the slide and are located on inner faces of the wings. When the open end wrench drives a workpiece to rotate, an outer face of each wing is partially in contact with the second jaw. Force imparted from the workpiece to the wings is transmitted to the second jaw.

Abstract: An open end wrench includes first and second jaws. The first jaw includes an arcuate sliding groove having two support walls and an arcuate sliding wall between the support walls. A slide is slideably received in the sliding groove and includes an arcuate sliding face slideable along the sliding wall. Two wings respectively extend from top and bottom faces of the slide. Top and bottom extension faces extend from a wrenching face of the slide and are located on inner faces of the wings. A spacing is formed between an outer face of each wing and one of the support walls to avoid friction, allowing smooth movement of the slide between an extended position and a retracted position.

Abstract: A wrench socket for use on fasteners such as pipework fittings where closed pipework or other obstructions would normally prevent the use of a ring wrench or closed sockets has a plurality of swivel arms pivotally mounted to a socket main body. The swivel jaws can be opened and closed as required around pipework and the fastener. Formations on the swivel arms align with one another when the swivel arms are closed allowing engagement by a drive bar that locks the swivel arms together. The swivel arms cooperate with the socket main body to define a polygonal fastener receiving aperture. The socket main body can be made thin profile to allow the wrench socket to be used in close proximity to obstructions that would prevent the operation of prior art wrenches and wrench sockets.

Abstract: A ratchet wrench includes a handle and a pawl is pivotably connected to the handle. The pawl is selectively engaged with a positioning unit in the handle. A ratchet wheel has a through hole defined through the center portion thereof and the ratchet teeth of the ratchet wheel are engaged with the engaging teeth of the pawl. Two clamp members are inserted in the through hole of the ratchet wheel and each have an extension. Each extension has a slot defined in top and bottom thereof. The two extensions extend toward opposite directions. Two ring-shaped covers are respectively connected to the top and the bottom of the ratchet wheel and each cover has two openings defined in the underside thereof. The extensions extend through the openings. Pins extend through the covers and are engaged with the slots. The clamp members are movable to clamp objects of different sizes.

Abstract: A driving tool includes a driving shaft and a bar which movably extends through the driving shaft. At least one of two end sections of the bar has a hole and a recess, wherein an engaging member is engaged with the hole and protrudes out from outer surface of the bar. The recess is defined axially in the end of the at least one end section and a control rod and a resilient member are received in the recess. The control rod includes a first notch and a second notch of different depths. When the control rod is operated to overcome a force of the resilient, the engaging member is engaged with the second notch, the engaging member is retracted into the at least one end section. The bar can be separated from the driving shaft so as to change the driving shaft.

Abstract: A convertible driving tool includes a tool handle having a carrier, a tool head having a shank for engaging into a compartment of the carrier, and a latch device includes a shaft engageable through the shank and the carrier, and the shaft includes a catch member for being engaged between the shank and the carrier for selectively latching the shank to the carrier, the catch member of the latch device is disengageble from the shank for allowing the tool head to be easily and quickly and readily attached or coupled to the tool handle and to be disengaged from the tool handle, and for allowing the driving tool head to be easily and quickly and readily changed or replaced with the new ones.

Abstract: A wrench includes a body and a driving head connected to the body. The body includes a push rod, two first push pieces, two second push pieces and a push unit so as to control the position and angle that the driving head rotates relative to the body. The driving head includes multiple positioning holes, an engaging protrusion, a through hole in the engaging protrusion, a bead and a control rod to control the engagement or disengagement between the engaging protrusion and the socket.

Abstract: A driving device includes a driving shank, a magnetic member mounted in the driving shank, a stop ring secured in the driving shank to stop the magnetic member, and an elastic member biased between the driving shank and the magnetic member. The driving shank has a first end provided with a mounting post and a second end formed with a mounting hole and a receiving chamber. The stop ring has an inner wall formed with a through hole and an outer wall provided with a toothed portion engaging a peripheral wall of the receiving chamber. The magnetic member has a peripheral wall formed with a stop flange that is movable to abut the stop ring. Thus, the elastic member provides a buffering effect to the magnetic member to reduce the pressure applied on the magnetic member.

Abstract: Coupling mechanisms for engaging and releasing a tool attachment such as a socket from a drive element include an engaging element and an actuating element. The actuating element can include a collar or other manually-accessible part, and various features allow for a relatively small outside diameter for the collar or other part. These features include configuring the actuating element to contact the engaging element within the drive element, placing the biasing elements within the drive element, and forming guides for parts of the actuating element within the drive element. A guided element is coupled between the engaging element and a biasing element and is arranged to partially overlap the biasing element.

Abstract: A hand tool includes a handle and an elbow structure. The handle has a grasp portion and a rod portion connecting collinearly. The elbow structure has a first section and a second section, wherein the first section connects with the handle collinearly, and the second section connected to the first section slantwise at an acute angle. A complementary angle to the acute angle is defined thereby. The hand tool defines an operative length, which is along the first axis of the first section from a bottom end of the grasp portion of the handle to a top end of the first section of the elbow structure. The operative length going with the complementary angle offers the hand tool facile manipulation.

Abstract: A tool includes first, second and third rods which are pivotably and pivotably connected to each other. The first rod is pivotably connected between the second and third rods. Control members, resilient members and contacting members are located at the pivotal portions so as to control the first rod to be pivotable or positioned relative to the second and third rods.

Abstract: A drive tool device includes a drive handle having two end portions, and a fitting pivotally attached to one of the end portions of the drive handle with a pivot shaft for allowing the fitting to be pivoted and rotated relative to the drive handle, the fitting includes two drives for selectively and changeably aligning with the longitudinal axis (L) of the drive handle, the drives of the fitting are perpendicular to each other, and include different dimensions for allowing the user to easily conduct various fastener actuating or driving operations. The drive handle includes a spring-biased projection for engaging with the fitting and for positioning the fitting to the drive handle at selected positions.

Abstract: A collapsible, multi-use tool for use in changing a flat tire includes a tool body having a first end including a curved chisel surface and a second end including a ratchet drive head. A central portion of the tool connects the two end portions, the ends of which are hingedly connected to the adjacent first and second ends. Sliding sleeves are disposed over the first and second ends and can be slid towards one another so as to cover the central portion of the tool and the hinged connections to keep the tool in a linear configuration that provides excellent leverage for breaking lug nuts loose. One of the sliding sleeves may be flared at one end so as to receive an end of the other sliding sleeve when coupled together.

Abstract: This invention is a new beginning for AN wrench users. No more uncomfortably thin AN or Bonney wrenches are needed. This wrench/tool system with separate, ergonomic handle is loaded with features designed for comfort. The separate handle is specifically designed with contoured finger grips, and gently radiused back edge resting against the palm of the user's hand. These are features that will provide the user all-day comfort. In addition, with the common blade of the wrench/tool ends, fitting the matching receiving groove of the handles, wrench/tool ends and handles of differing styles can be added, and upgraded to build a set of wrench/tool ends and handles to meet every need.

Abstract: Objects of the present invention provide an attachment for power tools that places and set wedge anchors. One embodiment of the present invention is directed to a new and improved attachment apparatus for a rotary-hammer type drill, the attachment including a first anchor setting end, a second attachment end, and a handle portion connecting the setting end to the attachment end. The attachment apparatus can be efficiently and easily mounted to the rotary-hammer type drill to simplify the installation of wedge anchors.

Abstract: A shaft has a driving end and a driven end. A plurality of driving adaptors with various handles are releasably connected to the shaft driving end. A plurality of driven adaptors with various tools for performing operations within a limited space work area, such as an inaccessible space, a confined space, or keyhole excavation, are releasably connected to the shaft driven end. The driving adaptors are positioned outside of the limited space work area. The driven adaptors are positioned within the limited space work area. The handle is manipulated at the shaft driving end to transmit selected rotational and translational movements through the shaft to the tool to perform operations in the limited space work area.

Abstract: A connecting rod assembly comprises a connecting element, a pivot element, a connecting rod, a spring and an engaging element. The connecting element is provided at both ends thereof with a connecting portion and a driving portion. The pivot element is provided at a first end thereof with a connecting pillar formed with a pivot hole, and the connecting pillar is further formed in an outer surface thereof with a moving hole in communication with the pivot hole. The connecting rod has a first end thereof connected to the connecting element, and a second end of the connecting rod is pivotally disposed in the pivot hole. The connecting rod is formed with an evasion groove for cooperating with the engaging element. The spring is disposed in the driving groove with both ends thereof pushed against an inner surface of the driving groove and the connecting element.

Abstract: A drive tool comprises a socket body, which has a drive end for coupling to a handle and a socket end for coupling to a bolt or nut. The drive end defines a drive opening for being engaged with a drive lug of the handle. The drive opening is defined by at least two sets of engagement surfaces, all sets of engagement surfaces being evenly distributed with respect to a central line of the socket body and being spaced at intervals of an angle, each set of engagement surfaces being configured to define a sub-opening that is matched with the drive lug of the handle so that the drive lug of the handle can be engaged with each set of engagement surfaces. Thereby, the handle can be coupled to the drive tool more easily so as to facilitate an operation.

Abstract: A paint gun assembly including a spray head and a connecting manifold. The spray head includes a bore terminating in a radially extending space of gradually increasing radius. The bore receives a shaft that has an axially extending bore which connects with radially extending bores in which balls are contained. The shaft also contains a plunger with a rounded end, engaging the balls. When forced into the axial bore, the plunger forces the balls into the radially extending bores and out into the tapered, radially extending space. The plunger engages a cam which is exposed at a surface of the manifold body and includes a hexagon drive to adjust the angular rotation of the cam using a suitable key. The manifold body provides a recess for receiving a retaining pin, whose end is received in the cam guide profile. Axial movement of the cam is resisted by a compression spring.

Abstract: A tool includes a head member and two pivotably connected rods. The head member has a passage defined transversely therethrough and the rods extends through the passage. A driving head is connected to the head member. When the pivotal portions of the two rods are located within the passage, the two rods form a straight and solid bar. When the pivotal portions of the two rods are located outside of the passage, the two rods are pivotable relative to each other so as to be used in different situations.

Abstract: A locking mechanism for use with a tool has a tool having a first working end, an opposite second end, a central axis therebetween, and a least one axial recess formed on an outer surface of the tool. A cap is rotatably received on the tool opposite second end, the cap comprising at least one recess formed on an outer surface thereon. The cap is rotatable between a first position in which the cap at least one recess aligns with the tool at least one recess, and a second position in which the cap at least one recess is out of alignment with the tool at least one recess. The locking mechanism further comprises a detent operatively positioned between the tool and the cap. The detent may be a pin and a spring, where the spring biases the cap into the second position.

Abstract: A wrench includes a handle, a yoke, a shaft, a head, a mandrel, a first transmitting unit and a second transmitting unit. The shaft includes a first section securely connected to the handle and a second section rotationally inserted in the yoke. The head is pivotally connected to the yoke. The mandrel is inserted through the head. The first transmitting unit can be used to transmit a small torque to the mandrel from the handle spun relative to the yoke. The second transmitting unit can be used together with the first transmitting unit to transmit a large torque to the mandrel from the handle pivoted together with the yoke.

Abstract: An automated tool includes a quick change spindle assembly. In another aspect of the present invention, the quick change spindle includes an attachment assembly for interchangeable fastener drivers. A further aspect of the present invention employs release member to actuate a drive member in the spindle assembly causing a retainer to uncouple a fastener driver with the spindle.

Abstract: A tool element has a body and an anti-skid collar. The body has an external surface, a connecting end, an operating end, a mounting recess and multiple notches. The mounting recess is annularly formed round the external surface of the body between the ends and has a bottom face. The notches are formed on the bottom face of the mounting recess at intervals. The anti-skid collar is an annular collar, is detachably mounted around the body and has an inner surface, an outer surface, a holding face and an anti-skid face. The holding face is formed on the inner surface and is rubbed against the notches of the body to hold the anti-skid collar securely on the body. The anti-skid face is formed on the outer surface of the anti-skid collar.

Abstract: A wrench adapter is provided that includes a body that has a base member with a bottom surface and a top surface. The body has a square shaped male drive with a side wall surface. The body has a concave transition surface with an upper end that is flush with the side wall surface so that a smooth transition is present from the side wall surface of the male drive to the concave transition surface across the upper end of the concave transition surface.

Abstract: A multi-function socket wrench includes a driving head, a handle, a pivot rod, a first elastic limit unit and a second elastic limit unit. The driving head is pivotally connected with the pivot rod. The driving head can be slidably moved on the handle through the pivot rod and the first elastic limit unit. The driving head and the handle are secured through the second elastic limit unit. The handle and the driving head of the multi-function socket wrench can be turned free as the demand of the user to be a T-shaped socket wrench or operated horizontally.