Abstract: An oil filter wrench includes a handle, a rotation knob, a wrench unit, and a oneway control member. The wrench unit includes a threaded rod, an adjusting member, a restriction piece, a clamping member, two screw members, a support member, and a fixed member. The oneway control member is pivotally mounted in the fixed member. Thus, the clamping member and the oneway control member clamp and drive the oil filter to rotate in a oneway manner only.

Abstract: A tile leveling structure includes a fixture, a leveling member mounted on the fixture, a first wing pivotally connected with the leveling member, and a second wing pivotally connected with the leveling member. The first wing is provided with a first push section and a first pressing face. The second wing is provided with a second push section and a second pressing face. When the first push section of the first wing and the second push section of the second wing are pushed, the first pressing face of the first wing and the second pressing face of the second wing are moved to respectively press the first tile and the second tile so as to level the first tile and the second tile.

Abstract: A tile leveling structure includes a fixture and a leveling member mounted on the fixture. The fixture includes a base, an adjusting plate extending upward from the base, and a oneway toothed rack mounted on the adjusting plate. The base and the adjusting plate have a connection formed with a breaking point. The leveling member is provided with a passage through which the adjusting plate passes. The leveling member has a bottom provided with a pressing face is provided with a first locking portion and a second locking portion. The leveling member is provided with a first wing and a second wing. The first wing is provided with a first hook which is provided with a first abutting face. The second wing is provided with a second hook which is provided with a second abutting face.

Abstract: A socket assembly includes an outer socket, an inner socket mounted in the outer socket, and an intermediate socket mounted in the outer socket. The outer socket has a plurality of drive blocks and a plurality of retaining grooves. The inner socket includes a first base, a plurality of first driving sections, and a plurality of first openings. The intermediate socket includes a second base, a plurality of second driving sections, and a plurality of second openings. Thus, the inner diameter defined between the first driving sections is smaller than that defined between the second driving sections by 2 mm, and the inner diameter defined between the second driving sections is smaller than that defined between the drive blocks by 2 mm, so that the inner socket, the intermediate socket and the outer socket co-operate to operate three successive sizes of nuts.

Abstract: An oil core wrench includes a oneway control unit, a wrench unit and a rotation handle. The wrench unit includes a threaded rod, an adjusting member, a base member and a clamping member. The oneway control unit is mounted in the base member and includes a control member. Thus, the oil core is clamped between the clamping member of the wrench unit and the control member of the oneway control unit so that the wrench unit can drive the oil core to rotate successively in a oneway manner by operation of the oneway control unit, so as to tighten or loosen the oil core easily and quickly. In addition, the oil core wrench can be operated in a narrow or small working region.

Abstract: A combination wrench includes a shank, a first driving member mounted on a first end of the shank, and a second driving member mounted on a second end of the shank. The shank has different cross-sectional profiles and areas from the first driving member to the second driving member so that the shank has different thickness from the first driving member to the second driving member so as to correspond to different forces. Thus, the mediate portion of the shank has a uniform thickness and has greater strength and torque so as to withstand a larger force so that when a stress is concentrated on the mediate portion of the shank, the mediate portion of the shank can tolerate the stress, thereby preventing the shank from being deformed or broken due to an excessive force.

Abstract: A pair of pliers includes two handles, two opposite connecting plates each pivotally mounted on the two handles, a limit post located between the two handles and encompassed by the two connecting plates, and two pivot shafts each extended through the two connecting plates and a respective one of the two handles so that the two handles are pivotally connected with the two connecting plates. Thus, the distance between the spring and the limit post is increased, so that the movement distance of the force arm of each of the two handles is increased, thereby saving the user's manual work.

Abstract: A suction device includes a handle (10) and an operation lever (30) which has a cam end (32) pivotably connected to the handle. A suction disk (20) has a shaft (21) which movably extends through the underside of the handle and is pivotably connected to the cam end. A release device (40) is connected to a side of the handle and removably engaged with a hole in a side of the operation lever and the handle. The release device can be easily operated by the thumb of the user to disengage the shaft from the operation lever, and the suction disk is pushed back by a spring (22) mounted to the shaft.