A reversible hand operated work tool comprising; a shaft including first and second working ends at opposite ends of the shaft; a co operating handle mounted on the shaft and capable of sliding therealong. The hand tool can be adjusted to move from a first working orientation to a second orientation by sliding the handle along the shaft mtennediate said working ends and without jtatnoving the handle form the shaft.

A method and device for inserting screws into a patient, such that when the device is removed the device does not stick to the screw. The device, being a push-off driver, may have a handle, an inner driver, and a threaded driver sleeve having a button mechanism and a plurality of spheres, and an inner sleeve. The method includes the steps of assembling a push-off driver attaching a bone screw to the push-off driver inserting the bone screw and detaching the bone screw from the driver by unthreading the threaded driver sleeve from the polyaxial screw which causes the spheres in the recess of the inner driver to back up against the start of the recess and causing the threaded driver sleeve to push-off the polyaxial screw from the inner driver.

A T-bar type hand tool includes a first part, a second part, a rotary member, a cap and a bearing. The second part is movably extending through a through hole of the first part. The rotary member is connected to the first part. The bearing is mounted to the rotary member and the cap. When rotating the rotary member, the first part is rotated quickly.

A movable wrenching tool comprises a bend shaft and a long shaft connected to the bend shaft. The bend shaft includes a first working portion extending in a first direction, a short shaft portion extending in a second direction, and a rotating portion connected to the short shaft portion. The rotating portion comprises first and second side walls extending in the second direction and being provided in parallel with each other. A position limiting notch is formed between the first and second side walls. In this case, the first direction and the second direction are different from each other. The long shaft comprises a projecting portion butted against the rotating portion, such that the projecting portion of the long shaft is inserted into the position limiting notch of the rotating portion, so as to enable the rotation of the long shaft with respect to the bend shaft.

A screwdriver with rotating lever according to this invention includes a screwdriver head. The screwdriver head includes a rod, an operation portion formed at a first end of the rod, and a fixing portion formed at a second end of the rod. The rod is a polygonal prism and extends spirally from the operation portion to the fixing portion to form a spiral curved surface. With the rod formed with the spiral curved surface, when the screwdriver with rotating lever operates, the rod is of higher strength and may bear stronger torsion stress for increasing the service life of the screwdriver.

A flex clipper provides a feature to help the cutting blade set float more effortlessly by adjusting automatically to the contours of a client's head to prevent getting stuck and causing cuts and irritation to the scalp. The hair clippers preferably also uses a self-contained motor-driven adjustment mechanism to adjust the relative position of the stationary and reciprocating blades of a common type of blade set. Two momentary switches operable by the thumb of the hand holding the clipper afford a barber total automatic adjustment with the clipper itself in an on or off condition.

A ratchet screwdriver may include a handle, a shaft and a ratchet switch device. The handle has a passage axially penetrating through a front end thereof, and a mounting member is mounted on an outer periphery of the front end of the handle. Furthermore, a housing slot formed inside a rear portion of the handle is configured to receive the ratchet switch device. The ratchet switch device comprises a base, a switch button, a driving piece, a positioning member, two engaging blocks, two springs, a ratchet and a locating piece, thereby allowing the shaft to independently rotate relative to the handle in a reversed-working direction. Thus, a user has no need to repeatedly detach the ratchet screwdriver from a screw or re-hold the handle when operating, which is more convenient and labor-saving.

Disclosed herein is a fortified plastic connector mount having a plastic generally conical nose with a top and bottom, the bottom formed as part of or affixed to the flat top of a body and the top of the nose having a square channel guide with corners. The channel is formed axial and centered in the nose and of a size to accept a tool or shaft. At 90 degree orientation from each other are four pairs of force buttressing ribs FBR wherein the FBR have a bottom affixed at said flat top, and the FBR has a support edge affixed to an annular outer wall of the nose. The four pairs of FBR each pair being positioned along one of the four sides of the square channel. In some instances, each FBR further comprises an interior edge and an outer edge and each outer edge is aligned with a corner.

A fortified plastic disposable driver having a plastic generally conical nose with a top and bottom, the bottom formed as part of or affixed to the flat top of a body and the top of the nose having a square channel guide with corners, is disclosed. The channel accepts a tool or shaft. At 90 degree orientation from each other are four pairs of force buttressing ribs wherein they have a bottom affixed at said flat top, and each has a support edge affixed to an annular outer wall of the nose. The four pairs of ribs, each pair being positioned along one of the four sides of the square channel. In some instances, each rib further comprises an interior edge and an outer edge, and each outer edge is aligned with a corner. A body and/or handle are used therewith to impart torque for use.

A T-bar type hand tool includes a first part, a second part, a rotary member, a cap and a bearing. The second part is movably extending through a through hole of the first part. The rotary member is connected to the first part. The bearing is mounted to the rotary member and the cap. When rotating the rotary member, the first part is rotated quickly.