Abstract: A tool rack includes a frame having two sidewalls and two slots are defined through the two sidewalls. A plurality of recesses are defined in the frame and a rod having second recesses is connected between the two sidewalls. A restriction member is connected to the frame and two distal ends of the restriction member are movably engaged with the slots of the frame. The restriction member includes third recesses which are located in alignment with the recesses so that the tools are engaged with the first, second and third recesses. A stop plate extends from a distal end of an inside of each third recess so as to prevent the tools from disengaging from these recesses. When shifting the restriction member, the stop plates are moved away from the recesses so that the tools can be picked out from the tool rack.

Abstract: An extension bar includes an elongate body, a conductive unit, a control unit and an illumination unit. The conductive unit includes a non-conductive first piece, a non-conductive second piece and a conductive third piece which is separated from the body. A conductive bead is engaged with one end of the third piece. The control unit includes a first control member and a second control member which has an opposite conductivity to the first control member. The first control member is mounted to the body and includes a first recess and a second recess. The second control member is securely engaged with the first recess and in contact with the exterior of the body. The illumination unit includes an illumination part and a power supply unit which contacts between the illumination part and the third piece.

Abstract: A driving head of a wrench includes three engaging surfaces and three reception concavities alternatively defined in an inner periphery thereof. A recess is defined in a center of each of engaging surfaces and located between first and second engaging portions. The last reception concavity has one of two insides connected to the second engaging portions next to it, the other insides of the last reception concavity is connected with a third engaging portion. The recesses and the reception concavities are sized to accommodate protrusions of a star-shaped nut. The reception concavity is sized to accommodate one of protrusions of a star-shaped nut. The adjacent first and second engaging portions have a common tangent line and three respective common tangent lines are located on three sides of a hexagonal object. The wrench is able to drive the object in two opposite directions without removing the wrench from the object.

Abstract: A tool rack includes a frame having two sidewalls and two slots are defined through the two sidewalls. A plurality of first recesses are defined in the frame and a rod having second recesses is connected between the two sidewalls. A restriction member is connected to the frame and two distal ends of the restriction member are movably engaged with the slots of the frame. The restriction member includes third recesses which are located in alignment with the first recesses so that the tools are engaged with the first, second and third recesses. A stop plate extends from a distal end of an inside of each third recess so as to prevent the tools from disengaging from these recesses. When shifting the restriction member, the stop plates are moved away from the first recesses so that the tools can be picked out from the tool rack.

Abstract: An extension bar with built-in light includes an elongate body having an open first end and an engaging recess in a second end of the elongate body. A switch member extends through a transverse hole of the elongate body and includes first and second conductive members connected thereto. A power supply unit and a light bulb are received in the passage. The second conductive member is in contact between the power supply unit and a conductive hand tool inserted into the engaging recess to activate the light bulb. The light bulb is also activated when rotating the switch member to contact directly the first conductive member, the second conductive member and the power supply unit.

Abstract: The present invention relates to an improved structure of wrench rack. The structure includes a rack, a sliding board and at least one lock piece. The rack has a sliding groove and a plurality of clips that are provided on both sides of the sliding groove in pairs. Every pair of clips is spaced in parallel for retaining different sizes of wrenches. Each of the clips consists of two opposite jaws, one of the jaws is equipped with an elastic piece to press on the wrench, and thus the wrench is retained between the jaws stably. The sliding board connects in sliding with the rack, and a plurality of positioning hooks are provided on one side of the sliding board in parallel, the positioning hooks can grip wrenches by sliding with the sliding board, so as to prevent the wrench from taking out. The lock piece can lock the sliding board on the rack when the positioning hook locks the wrench.

Abstract: The present invention discloses a ratchet wheel of wrenches, the structure of the ratchet wheel has a penetrating hole consisting of two adjacent receiving holes having internal diameters differing from each other, each internal periphery has six forefront surfaces, six grooves and six concavities, the concavities and the grooves are disposed annularly in an interlaced order that are capable of containing flanges of a gear-shape workpiece, and the forefront surfaces are capable of latching the edges of a hexagonal workpiece.

Abstract: An extension bar with built-in light includes an elongate body having an open first end and an engaging recess in a second end of the elongate body. A switch member extends through a transverse hole of the elongate body and includes first and second conductive members connected thereto. A power supply unit and a light bulb are received in the passage. The second conductive member is in contact between the power supply unit and a conductive hand tool inserted into the engaging recess to activate the light bulb. The light bulb is also activated when rotating the switch member to contact directly the first conductive member, the second conductive member and the power supply unit.

Abstract: The present invention relates to a structure of wrench, which is mainly that a handle extends out from one side of a ratchet wheel integrally, a plurality of forefront surfaces and grooves are disposed around the internal periphery of the opening of the ratchet wheel in an interlaced order, and the forefront surfaces each has a concavity disposed on the middle portion of the protruded curved surface thereof. The concavities have different shapes from grooves and both are to be used to accommodate a workpiece. Besides, projected stop parts are provided on inside of the opening, with which the objectives of being suitable for various workpieces in multiple specifications and preventing the workpieces from passing through the ratchet wheel randomly would be achieved.

Abstract: The present invention relates to a structure of wrench, which is mainly that a handle extends out from one side of a driving head integrally, a plurality of forefront surfaces and grooves are disposed around the internal periphery of the opening of the driving head in an interlaced order, and the forefront surfaces each has a concavity disposed on the middle portion of the protruded curved surface thereof. The concavities have different shapes from grooves and both are to be used to accommodate a workpiece. Besides, projected stop parts are provided on inside of the opening, with which the objectives of being suitable for various workpieces in multiple specifications and preventing the workpieces from passing through the driving head randomly would be achieved.

Abstract: This invention relates to an F figure wrench that comprises a holding rod, a moving part, a turning rod and a driving part. At one end of the holding rod, a concavity is made and two lugs are implemented; the concavity is made as a guide hole to accommodate the moving part, the lug holes of the two lugs are used as pivot holes for the driving part to be pivot-connected with the holding rod. Furthermore, a penetration is made on the holding rod and the moving part concentrically, and intersects through the concavity for installation of the turning rod. A cam eccentric to the turning rod axis is implemented on the turning rod; when the turning rod is turned, the moving part is pushed by the eccentric cam and moving along the guide hole in the holding rod.

Abstract: An extension bar with built-in light includes an elongate body having an open first end and an engaging recess in a second end of the elongate body. A switch member with a first conductive member extends through a transverse hole of the elongate body. A carrier is received in the engaging recess and a second conductive member is connected to the carrier. A power supply unit and a light bulb are received in the passage. The first end of the second conductive member is moved to contact the power supply unit to activate the light bulb when a conductive hand tool is inserted into the engaging recess. The light bulb is also activated when rotating the switch member to contact directly the first conductive member, the second conductive member and the power supply unit.

Abstract: The present invention relates to an improved structure of wrench rack. The structure includes a rack, a sliding board and at least one lock piece. The rack has a sliding groove and a plurality of clips that are provided on both sides of the sliding groove in pairs. Every pair of clips is spaced in parallel for retaining different sizes of wrenches. Each of the clips consists of two opposite jaws, one of the jaws is equipped with an elastic piece to press on the wrench, and thus the wrench is retained between the jaws stably. The sliding board connects in sliding with the rack, and a plurality of positioning hooks are provided on one side of the sliding board in parallel, the positioning hooks can grip wrenches by sliding with the sliding board, so as to prevent the wrench from taking out. The lock piece can lock the sliding board on the rack when the positioning hook locks the wrench.

Abstract: This invention relates to a driving head of rotary wrenching tools, the driving head can be a sleeve or directly implemented on the wrench, the driving head has an opening with grooves, forefront surfaces and concavities implemented inside the opening, the forefront surfaces are implemented individually in-between the grooves, and one concavity is implemented on each forefront surface, with which varieties of work pieces in different shapes can be tightly fitted into.

Abstract: This invention relates to an F figure wrench that comprises a holding rod, a moving part, a turning rod and a driving part. At one end of the holding rod, a concavity is made and two lugs are implemented; the concavity is made as a guide hole to accommodate the moving part, the lug holes of the two lugs are used as pivot holes for the driving part to be pivot-connected with the holding rod. Furthermore, a penetration is made on the holding rod and the moving part concentrically, and intersects through the concavity for installation of the turning rod. A cam eccentric to the turning rod axis is implemented on the turning rod; when the turning rod is turned, the moving part is pushed by the eccentric cam and moving along the guide hole in the holding rod.

Abstract: This invention relates to a driving head of rotary wrenching tools, the driving head can be a sleeve or directly implemented on the wrench, the driving head has an opening with grooves, forefront surfaces and concavities implemented inside the opening, the forefront surfaces are implemented individually in-between the grooves, and one concavity is implemented on each forefront surface, with which varieties of work pieces in different shapes can be tightly fitted into.

Abstract: A socket adapter includes a main body having a receiving recess and a slide slot, a drive rod slidably mounted in the slide slot of the main body, and a control member movably mounted in the main body. Thus, the drive rod has a plurality of locking grooves, and the control member has a locking portion, so that when the control member is moved relative to the drive rod, the locking portion of the control member is locked in or detached from the respective locking groove of the drive rod, thereby positioning the drive rod on the main body or releasing the drive rod from the main body.

Abstract: A box wrench assembly has latch edges and accommodating grooves sequentially disposed around the internal periphery of an operating end of a box wrench, and each accommodating groove is disposed between two latch edges, and a groove is disposed proximate to the middle of a protruded surface of the latch edge to divide a cambered surface into two, so as to fit screw pieces of different shapes when the wrench is used.

Abstract: A ratchet wheel structure includes a latch edge, a containing groove and a groove coupled in sequence, and the latch edge disposed at an internal periphery of the ratchet wheel is a flange, and the containing groove is disposed between the latch edges, and the groove is protruded from the middle of a protruded surface of the latch edge for dividing the latch edge into two.

Abstract: A wrench structure includes a body, a rotation member, a drive rod, a press rod, and an elastic member. The rotation member is rotated relative to the body freely so as to adjust the included angle between the rotation member and the body arbitrarily. Thus, the operation angle of the wrench structure can be adjusted arbitrarily, thereby facilitating the user operating the wrench structure. In addition, the drive rod is limited by the rotation member, so that the drive rod is received in the body without detachment. Further, the press rod is limited by the drive rod, so that the press rod is received in the body without detachment.