The sleeve has different specifications according to different classification standards. Size classification is 1/4, 3/8, 1/2 specifications; The length classification has long sleeve, short sleeve, E-shaped sleeve specifications, according to the appearance of single groove and double groove; Knurled; Straight barrel; Nickel and chrome plating.
Sleeve application:
For the nut end or bolt end is completely lower than the connected surface, and the diameter of the hole can not be used with an open wrench or an adjustable wrench and a box wrench, the socket wrench is used, and the space limit of the bolt part can only be used with a socket wrench.
Sleeve composition:
It is composed of a plurality of hexagonal holes or twelve corner holes and is equipped with a handle, a connector and other accessories.
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