A wrench includes a body having a room defined therein. Two heads are respectively formed on two ends of the body, and each head has an operation hole defined therethrough. Each of the operation holes communicates with the room. A positioning rod is movably received in the room and has an outer threaded portion and a rotary member is rotatably and threadedly mounted to the outer threaded portion of the positioning rod. The rotary member is rotated to move the positioning rod into either one of the operation holes to position an object in the operation hole.

A gripping sleeve is provided, including: a first sleeve, being substantially tubular and having at least one through hole; at least one restricting member, received in the through hole; a second sleeve, sleeved on the first sleeve and being movable relative to the first sleeve, the restricting member being abutted by the second sleeve and being controllably engaged within an annular groove of a body portion of a main body; an elastic member, disposed around the first sleeve and abutting against the first and second sleeves; a restricting mechanism, arranged on at least one of the first and second sleeves and located between the first sleeve and an outer circumferential face of the second sleeve. A hand tool is further provided, including the main body and the gripping sleeve.

A fabrication method of a holding sleeve is provided. The holding sleeve is adapted to dispose around a body portion of a main body and can rotate relative to the body portion. A blocking member is disposed in at least one through hole of a first sleeve. A second sleeve is movable relative to and disposed around the first sleeve. The blocking member is controllably pressed by the second sleeve to be partially received in an annular groove of the body portion. An elastic member is disposed around and between the first sleeve the first and second sleeves. Before the second sleeve is mounted to the first sleeve, a part of the elastic member corresponds to the blocking member in a radial direction of the first sleeve and can limit the blocking member to locate in the through hole.

A tool with a pivoting head is shown. The tool includes a locking mechanism that allows the angular position of the head to be locked securely in place once selected by a user. The locking mechanism may be used with a variety of tools, such as ratchet wrenches, that allow for repositioning of the head relative to the handle of the tool.

In some embodiments, a maintenance apparatus is provided for maintaining semiconductor processing equipment. The maintenance apparatus has an articulated member having a first member with a handle engagement portion and a second member with a first tool engagement portion. The first member is rotationally coupled to the first member about an articulation axis. A first tool member in selective engagement with the first tool engagement portion of the second member.

A tool for use with a vehicle jack or vehicle wheel fastener including an operation shank, a first segment and a second segment. The first segment may include a connection end coupled to the operation shank, a distal end spaced from the operation shank, and a first slot extending longitudinally in a first direction. The second segment may include a first end and a second end opposite to the first end, with the second segment movably connected to the first segment. The second segment movable in the first direction so the first end of the second segment extends beyond the distal end of the first segment and the second segment is movable in a second direction opposite to the first direction so the second end extends beyond the connection end.

A hand tool includes a handle having a room defined therein. A first and second lugs extend from the front end of the handle. A space is defined between the first and second lugs and communicates with the room. A working part is to be connected with a bit, and has a pivotal portion which is pivotably connected between the two lugs. A plate is connected to at least one of the first and second lugs, and has multiple first recesses and a second recesses. A positioning member is located between the pivotal portion and the plate so as to be engaged with one of the first and second recesses to position an angular position of working part. The working part is able to be pivoted and received in the room in the handle.

A hand tool includes two parts with a core received between the two parts to form a handle. A shank is connected to the handle. The shank includes a first engaging portion which is connected to the first opening of the two parts and the first aperture of the core. The third engaging portion is engaged with the second opening and the second aperture. The shank, the two parts and the core are well connected to each other so as to obtain a hand tool with simple structure.

A tool attachment includes a first body, a first gear, a second gear, at least one third gear, a cover, multiple bolts and multiple tools. The at least one third gear is engaged with the first and second gears. When either one of the first and second gears rotates, the first gear, the second gear and the at least one third gear rotates together. The tools can be connected to the tool attachment as needed.

A ratchet wrench having a flexible positioning structure includes a drive bar, a rotary head, and a locking button. The drive bar includes a fork arm, an axial hole, and a radial hole communicating with the axial hole. The rotary head is pivotally connected to the fork arm; the rotary head includes a round housing, a plurality of positioning recesses disposed on the round housing, and a pivot axis passing through the rotary head and two ends of the fork arm. The pivot axis is perpendicular to the radial hole. The locking button includes a flexible fastener inserted through the radial hole and a latch bar disposed in the axial hole. The flexible fastener is flexibly movable in association with movement of the latch bar, so that the latch bar is engaged with or released from any of the positioning recesses.