A universal multiple bit adapter is disclosed. The adapter is designed for compatibility with most of the available screws in the construction market including Philip screw, Roberson screw, Torx screw and nut drivers. The multiple bit adapter comprises a cylindrical enclosed housing chamber with plurality of openings to enable selective application of the elongated driver bits. The screw driver bits are made from hardened steel and housing chamber is made from any metal or plastic material. The multi-functional bit adapter unit further comprises a clip protection member to hold the elongated driver bits from rotating further during short repair maintenance. This convenient single unit is small, compact and easy to carry in a pocket and can be easily attached to a power tool like a drill or impact wrench.

A device for removing a boat drain plug, having a body with a distal end and a proximal end. The distal end has a first square-shaped opening configured to engage a boat drain plug. The first square-shaped opening features a first notch extending outward from one side and a second notch extending outwardly from a diametrically opposed side. The proximal end has a first handle extending laterally outward from the body, a second handle diametrically opposed to the first handle and extending laterally outward from the body, and a second square-shaped opening disposed between the first handle and the second handle. The second square-shaped opening is configured to engage a socket wrench.

A socket with magnetic tip assembly for receiving and retaining a head of a fastener is provided. The magnetic socket includes a cylindrical configuration, with a first open end including said magnet to the front face of said tip, which is adapted to engage the hexagonal head of a nut or bolt.

A socket with magnetic tip assembly for receiving and retaining a head of a fastener is provided. The magnetic socket includes a cylindrical configuration, with a first open end including said magnet to the front face of said tip, which is adapted to engage the hexagonal head of a nut or bolt.

A foldable torque tool is provided, including a handle, a driving member and a blocking structure. The driving member is rotatably disposed on the handle. The blocking structure has a first blocking unit and a second blocking unit. The first blocking unit is disposed on the handle. The second blocking unit is disposed on the driving member. When the driving member is in an unfolded position, the first blocking unit is blocked with the second blocking unit, and then the driving member is non-rotatable to a folded position.

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.

An inner C-shaped retaining ring assembly includes a base member having an inner peripheral surface that defines a receiving space and an annular retaining groove, and an outer peripheral surface having at least one aperture communicating with the retaining groove. An insert member has at least a portion received in the receiving space. A C-shaped retaining ring is elastically disposed in the retaining groove to prevent removal of the insert member from the receiving space, and is configured to be acted upon by an external force through the aperture to elastically deform toward the receiving space and form an insertion gap with the inner peripheral surface.

An inner C-shaped retaining ring assembly includes a base member having an inner peripheral surface that defines a receiving space and an annular retaining groove, and an outer peripheral surface having at least one aperture communicating with the retaining groove. An insert member has at least a portion received in the receiving space. A C-shaped retaining ring is elastically disposed in the retaining groove to prevent removal of the insert member from the receiving space, and is configured to be acted upon by an external force through the aperture to elastically deform toward the receiving space and form an insertion gap with the inner peripheral surface.

A bolt adjustment device having a body, a clamping mechanism and an attachment point. The body extends in a longitudinal direction from a first end to a second end, the body having a cavity extending into the body in the longitudinal direction from the first end. The cavity can accommodate a thread during use of the bolt adjustment device. A step in the cavity is configured and arranged to engage with a nut when in use. A torque imparted on the attachment point will impart a torque to the bolt adjustment device. The clamping mechanism is attached to the attachment point such that the clamping mechanism clamps the nut in the cavity when torque is imparted on the clamping device.

A hand tool includes a body provided with a mounting portion. The mounting portion includes six first recessed portions, six second recessed portions, and six locking faces. Each of the first recessed portions includes two grooves. Each of the second recessed portions includes two first arcuate faces and a second arcuate face. Each of the locking faces has a planar shape and is arranged between two of the second recessed portions. Each of the first recessed portions is arranged on one of the locking faces. The locking faces define an imaginary hexagonal portion having six sides coinciding with the locking faces respectively. The mounting portion of the body is mounted on a screw member. The screw member has six ribs received in the second recessed portions. Each of the ribs rests on one of the first arcuate faces.