Ratchet (device)
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A ratchet is a mechanical device that allows continuous linear or rotary motion in only one direction while preventing motion in the opposite direction. Ratchets are widely used in machinery and tools
A ratchet lever hoist, also known as a 'come-along.'
Cutaway of the ratchet mechanism of a cable tie.
Socket wrench
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A socket wrench is a type of spanner 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.
Ratchet (device)
…motion in the opposite direction. Ratchets are widely used in machinery and tools. The word ratchet is also used informally to refer to a ratcheting socket wrench…
Socket set with ratchet (above), four hex sockets and a universal joint
Torx socket
"6 point" hexagonal socket
Splined socket