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A wrench set provides the versatility needed to tackle a range of nuts and bolt sizes, and the leverage to dislodge stubborn fasteners.
Socket set with ratchet (above), four hex sockets and a universal joint. A socket wrench (or socket spanner) is a type of spanner (or wrench [1] in North American English) that uses a closed socket format, rather than a typical open wrench/spanner to turn a fastener, typically in the form of a nut or bolt.
A wrench set provides the versatility needed to tackle a range of nuts and bolt sizes, and the leverage to dislodge stubborn fasteners.
Animation of ratchet gear (green) and pawl (pink). Red arrows indicate which way force is applied to the gear. A ratchet featuring a gear (1) and pawl (2) mounted on a base (3) Animation of ratchet gear rack (green) and pawl (pink).
ratcheting box wrench: ratcheting ring spanner: A type of ring spanner, or box wrench, whose end section ratchets. Ratcheting can be reversed by flipping over the wrench, or by activating a reversing lever on the wrench. This type of wrench combines the compact design of a box wrench, with the utility and quickness of use of a ratchet wrench.
An air ratchet wrench is very similar to hand-powered ratchet wrenches in that it has the same square drive, but an air motor is attached to turn the socket drive. Pulling the trigger activates the motor which turns the socket drive. A switch is provided to change which direction the socket drive turns. [1]
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