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Pass-through sockets and ratchets are built for 1 ⁄ 4-inch, 3 ⁄ 8-inch and 1 ⁄ 2-inch sets in both SAE and metric sizes. By using a fine tooth ratchet and socket system that allow a pass-through ratchet to be used as a conventional ratchet handle with interchangeable 1 ⁄ 4-inch and 3 ⁄ 8-inch drives some ratchets can be used with ...
A ratchet consists of a round gear or a linear rack with teeth, and a pivoting, spring-loaded finger called a pawl (or click, in clocks and watches [1] [2]) that engages the teeth. The teeth are uniform but are usually asymmetrical, with each tooth having a moderate slope on one edge and a much steeper slope on the other edge.
A variety of impact wrenches, in all common sizes from 1 ⁄ 4 to 1 in (6.4 to 25.4 mm), of different styles, including inline, butterfly, and pistol grip. This "reactionless" ratchet uses a miniature pin clutch impact mechanism instead of a gear reduction. Large 2 + 1 ⁄ 2 in (64 mm) Drive Ingersoll Rand impact vs 1 ⁄ 2 in (13 mm) impact ...
A set of metric spanners or wrenches, open at one end and box/ring at the other. These are commonly known as “combination” spanners. A wrench or spanner is a tool used to provide grip and mechanical advantage in applying torque to turn objects—usually rotary fasteners, such as nuts and bolts—or keep them from turning.
The ratchet can be set to rotate left or right with each push, or can be locked so that the tool can be used like a conventional screwdriver. One disadvantage of this design is that if the bit slips out of the screw, the resultant sudden extension of the spring may cause the bit to scratch or otherwise damage the workpiece.
A spin disk is a socket wrench accessory used to quickly turn nuts after they have been loosened with the wrench.. Spin disks are usually a flat round disk, commonly of plastic, with a square hole in the middle to fit over the socket wrench's male adapter plug.