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- Combines an offset handle with a male drive piece that has a spring-loaded bearing to lock on various size sockets. They can be used at almost any angle since handles may be attached to the head by a jointed hinge device.
- The most common type is the detachable socket wrench, with square drive for hand use. Common square drive sizes are 1/4", 3/8" and 1/2", and these are normally used in conjunction with a ratchet wrench.
- Sockets are available with 6-, 8- and 12-point gripping ends, in a full range of inch and metric sizes.
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