A retainer removal tool for a carpet retainer of a vehicle includes a shaft portion and a handle portion. The shaft portion has a cylindrical shape and includes an engagement tip has a hollow cylindrical shape and is configured to depress a tab of the retainer in a radially inward direction to decouple an upper retainer from a lower retainer. Further, a method for removing a carpet retainer of a vehicle includes centering a retainer removal tool over the retainer, depressing the retainer removal tool onto the retainer, disengaging a tab of the retainer with the retainer removal tool, and removing the retainer from the carpet.

Driver support assemblies to work in concert with a setup assembly are provided. Setup assemblies to work in concert with a driver support assembly and a cutting assembly are provided. Cutting assemblies configured to work in concert with a driver support assembly are provided. Driver tip cutting assemblies are provided. Methods for cutting the tip of a driver shaft are provided.

A driving tool includes a body portion, a driving portion, and a neck portion. The driving portion defines a reference rotating axis. A distal end of the driving portion opposite to the body portion is provided with a front driving face having a first width in a radial direction of the reference rotating axis. The neck portion is disposed between the body portion and the driving portion and has a second width in the radial direction of the reference rotating axis. The second width is less than the first width.

A driver tool for insertion and removal of a first part configured for threaded engagement in a corresponding threaded bore in a second part has a driving end portion of polygonal shape with multiple flats configured for engagement in a recess in the first part having a corresponding polygonal shape. Some or all of the flats have a respective grabbing feature or edge designed to grab or grip into the opposing surface of the recess to allow a greater amount of torque to be applied to the first part when the tool is rotated in the unthreading direction than when it is rotated in the opposite threading or insertion direction.

Disclosed a screw tightening angle conversion head, including a conversion head body, wherein one end of which is fixedly provided with a mounting groove, a fixed cover plate is fixedly arranged at the upper end of the mounting groove, a transmission worm is rotatably arranged at one end inside the conversion head body close to the mounting groove, one end of the transmission worm penetrates through the conversion head body and extends out from an outer end, a rotating seat is fixedly arranged at a rotational junction between the transmission worm and the inside of the conversion head body, annular worm teeth are fixedly arranged at the outer side of the transmission worm, a rotating shaft is rotatably arranged at one end inside the conversion head body away from the transmission worm, and the outer wall of the rotating shaft is fixedly connected with an intermediate gear.

A screwdriver comprises a handle including a butt and a shank extending from the handle and including a tip. The butt includes a first indicating element having a shape corresponding to the tip and a plurality of second indicating elements arranged around the first indicating element. Each of the second indicating elements has the shape.

Methods and apparatus for a fastener head having a dual zone socket area and a mating driver bit according to aspects of the present technology include a fastener configured with driving surfaces adapted to provide enhanced engagement between each other during use. The fastener includes a recessed socket area with a sidewall that has an upper inwardly tapering section and a lower vertical section that extends to the bottom of the recessed socket area. The upper inwardly tapering section of the sidewall may also include an offset relative to the lower vertical section to create asymmetrical driving and removal surfaces. The technology also includes a corresponding mating driver bit configured with mating surfaces to the fastener to provide enhanced engagement between the fastener and mating driver bit. The technology also allows either the fastener or the driving bit to be used with preexisting fasteners and driver bits.

Methods and apparatus for a fastener head having a dual zone socket area and a mating driver bit according to aspects of the present technology include a fastener configured with driving surfaces adapted to provide enhanced engagement between each other during use. The fastener includes a recessed socket area with a sidewall that has an upper inwardly tapering section and a lower vertical section that extends to the bottom of the recessed socket area. The upper inwardly tapering section of the sidewall may also include an offset relative to the lower vertical section to create asymmetrical driving and removal surfaces. The technology also includes a corresponding mating driver bit configured with mating surfaces to the fastener to provide enhanced engagement between the fastener and mating driver bit. The technology also allows either the fastener or the driving bit to be used with preexisting fasteners and driver bits.

A torque transmission driver has a first end portion adapted to receive and transmit torque from a torque generation source, and a second end portion including a shaped tapered bit having drive surfaces with an alternating series of five or six lobes and troughs about a rotational axis, having a taper angle between 15 and 45° from the rotational axis operable to engage corresponding drive surfaces in a plurality of at least two size fasteners, the tapered drive surfaces of the bit comprising a first tapered portion operable to engage drive surfaces of a first sized fastener and a second tapered portion operable to engage drive surfaces of a second sized fastener, the drive surfaces of the second sized fastener being larger than the drive surfaces of the first sized fastener.

A drive system with full surface drive contact. The drive system tends to maximize the surface contact pattern or area at typical bit-recess reaction (drive) torque values, thereby tending to minimize bit-recess surface contact stresses, coating damage, recess ream and premature bit fatigue failure.