1. Sleeve: also known as the sleeve head, it is divided into manual and motorized. One end of the sleeve head has a square hole to connect with the square tenon of the transmission accessory (such as a quick crank); the other end has a six (or twelve, eight) corner hole, which is sleeved on the hexagon or square head of the bolt and nut for easy operation Tighten or remove bolts and nuts.
2. Connecting accessories: connecting accessories include joints, posts, universal joints, etc., which are the connections between the socket head and the transmission accessories (such as ratchet wrenches).
3. Transmission accessories:
⑴Slide head handle: also called sliding handle, T-shaped handle, it is a kind of transmission accessory used to rotate the sleeve head. Its characteristic is that the sliding head can be moved in order to adjust the size of the moment arm when rotating; in addition, it is especially suitable for occasions that can only be operated within a 180° angle range.
⑵Quick crank: also called bow handle, quick handle, and crank handle, it is a kind of transmission accessory used to rotate the socket head. Its characteristic is that it can quickly and continuously rotate by using the arched handle during operation.
⑶ Ratchet wrench: also called ratchet trigger and ratchet handle. It is a transmission accessory for rotating the sleeve head. In addition to being an accessory to a complete set of socket wrenches, ratchet wrenches are often used alone. The ratchet mechanism can be forced in one direction, and the reverse is idling. The characteristic of the ratchet wrench is that the ratchet mechanism can be rotated at a small angle in a narrow space to tighten or remove the screw and nut. There are many types of ratchet wrenches, such as pointed-tail ratchet wrenches, whose tail can be used for twisting wires and general prying work encountered in operations, suitable for construction sites; double-mouth ratchet wrenches, with two openings of different sizes , In order to apply different specifications of screws and nuts; long-mouthed ratchet wrench, longer wrench, suitable for use in recesses such as channel steel, I-beam, pipes, horns, etc.; and aluminum ratchet wrenches, thin ratchet wrenches, and handles Ratchet wrenches with long holes, etc.
⑷Bent handle: also called elbow handle, L-shaped handle, is a transmission accessory used to rotate the socket head, mainly used in socket wrenches with a small number of components.
⑸ Rotary handle: It is a kind of transmission accessory used to rotate the sleeve head, suitable for screwing the bolts and nuts located in the deep concave part.
⑹ Steering handle: also called active head handle, it is a transmission accessory used to rotate the sleeve head. Its characteristic is that it can use the flexible structure of the handle and the square tenon to rotate the bolts and nuts in different angle ranges.