A modular motorcycle tool kit comprising multiple tool drivers and a plurality of attachable tool components said kit being configured to address most motorcycle repair or service needs. Three drivers include apertures and special step-key shank slots to engage and receive a plurality of tool insert bits and fastener tool heads. The fastener tool heads are coupled to unique step-key shanks which are stronger, more robust, and less expensive to manufacture than comparative fastener tool head shanks. The drivers can be used separately or in conjunction with one another depending on the need of the user. The modular motorcycle tool kit is specifically designed and configured to be an invaluable modular motorcycle tool and at the same time occupy very little space on the motorcycle.

A bit accessory for a bit has a sleeve with an accommodating cavity running through the sleeve and a limiting member with a limiting hole running through the limiting member. The sleeve includes a first stopping portion for stopping the limiting member from passing through the accommodating cavity and the limiting member includes a first hole wall portion forming a first hole wall which provides the limiting hole with a minimum hole diameter and a second hole wall portion forming a second hole wall which provides the limiting hole with a maximum hole diameter. The limiting member is at least partly accommodated in the accommodating cavity, and a direction which the limiting hole runs through the limiting member is parallel to the accommodating cavity when the limiting member is stopped by the first stopping portion.

A right-angle socket for ratchet tools includes a hexagonal drive port adapted to receive interchangeable interface fittings, or adapters, which accept ratchet drives from various styles of ratchets. The interface fitting journals within and coaxial with the hexagonal drive port and is held in place by a keeper such as a spring ball. A coaxial port within the interface fitting accepts one type of conventional ratchet drive, such as a square drive, of selected size commonly available. Other interface fittings accept other types of ratchet drives, such as pass-through drives. The interface fitting may be inserted from either side of the socket and includes a circumferential groove that receives the keeper to hold the interface fitting axially affixed within the hexagonal port. Both single and double-sided interface fittings are provided, as well as swivel fittings.

Scrench tools for chainsaws are provided. A scrench tool includes a first shaft extending from a first end to a second end, wherein the first end comprises a recessed slot having an opening at the first end; and a second shaft extending away from the first shaft to a screwdriver head.

A screw bit body which allows for efficient torque force application onto a socket fastener. The screw bit body includes a plurality of laterally-bracing sidewalls, a first base, and a second base. The laterally-bracing sidewalls are radially distributed about a rotation axis of the screw bit body with each further including a first lateral edge, a second lateral edge, a bracing surface, and an engagement cavity. The engagement cavity creates an additional gripping point to prevent slippage in between the screw bit body and the socket fastener. The engagement cavity traverses normal and into the bracing surface. Additionally, the engagement cavity traverses into the screw bit body from the first base to the second base. The engagement cavity is specifically positioned offset from the first lateral edge by a first distance and positioned offset from the second lateral edge by a second distance.

A fastener head adapter includes a drive portion that can be engaged by a suitable driver, and a mating portion that is configured to mate with a fastener head. The fastener head adapter is attached to a fastener head. The fastener head adapter preferably provides a different type of drive portion than exists on the fastener head. Once the fastener head adapter is attached to the fastener head, the screw may then be turned by using the driver to engage the drive portion of the fastener head adapter and to turn the fastener head adapter, which in turn, turns the screw.

A snap hook includes a frame, a gate, and a screwdriver blade. The frame has a first hook portion and a second hook portion located on different sides. The gate has an abutting end abutting against an end of the first hook portion. The screwdriver blade is pivotally connected to the frame, and a working end is formed on an end of the screwdriver blade whereby the snap hook could be engaged with two objects through the first hook portion and the second hook portion. The gate blocks a side opening of the first hook portion, and therefore the object hanged in the first hook portion would not fall out accidentally. Furthermore, the screwdriver blade increases the added value of the snap hook.

A driver bit for applying torque to a fastener with both wrenches and bit screwdrivers comprising: a) a drive portion comprising: i) a hexagonal shank portion, and ii) a holder portion comprising a collar or a groove that is capable of accommodating a C-clip; and b) a working head portion.

A tool bit includes a drive portion configured to be selectively coupled to a tool and composed of a first material, a shank coupled to the drive portion ad being composed of the first material, and a working end portion configured to engage a fastener. The working end portion includes a first segment and a second segment. The first segment is coupled to the shank and composed of the first material. The second segment is fixed to the first segment at a connection interface and composed of a second material different than the first material. The second segment includes a first portion and a second portion. Solely the second portion engages the fastener when the tool bit drives the fastener.

A torque transmission driver is disclosed. The torque transmission driver has a main body having a first end portion and a second end portion, where the first end portion is adapted to receive and transmit torque from a torque generation source, and the second end portion is opposite the first end portion and has a key shape adapted to fit a recess in a fastener and has a protruding lead end having a taper between 10 and 30 and different in shape than the key shape with at least a portion of the protruding lead end substantially coextensive with the major dimension of the key shape. A torque transmission driver adapted to drive a small fasteners is also disclosed where the key shape is adapted to fit the recess of the small fastener.