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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.
The company has a tool line of over 3,500 items including wrenches, ratchets, screwdrivers, tool boxes and air tools. In 2021, SK was acquired by Hangzhou GreatStar Industrial. Jay Leno described the company as "an iconic American brand for decades," [2] and the company is known for inventing the round-head ratchet wrench.
Most box end wrenches are sold as '12-point' because 12-point wrenches fit over both 12-point and 6-point bolts. 12-point wrenches also offer a higher number of engagement points over six-point. However, 12-point wrenches have been known to cause round-off damage to 6-point bolts as they provide less contact space.
A ratchet (occasionally spelled rachet) 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. The word ratchet is also used informally to refer to a ratcheting socket wrench.
It made automotive tools, such as wrenches and sockets, [1] and a number of specialty tools. [ 2 ] Blackhawk introduced a number of innovations to conventional drive tools, such as the "Lock-On" system of locking sockets, [ 3 ] gearless ratchets, [ 4 ] [ 5 ] telescoping ratchet handles, [ 6 ] and 7/16" drive tools. [ 7 ]
An adjustable spanner (UK and most other English-speaking countries), also called a shifting spanner (Australia and New Zealand) [1] or adjustable wrench (US and Canada), [a] is any of various styles of spanner (wrench) with a movable jaw, allowing it to be used with different sizes of fastener head (nut, bolt, etc.) rather than just one fastener size, as with a conventional fixed spanner.
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