Wrenches are basically divided into two types, dead wrenches and adjustable wrenches.
The former refers to a wrench that has a fixed number written on it, and the latter is an adjustable wrench.
1. Wrench: A fixed-size opening at one or both ends for screwing a nut or bolt of a certain size.
2. Torx wrench: The working end with hexagonal hole or twelve-corner hole at both ends is suitable for occasions where the working space is small and the ordinary wrench cannot be used.
3. Combination wrench: One end is the same as the single-head wrench, the other end is the same as the wrench, and the bolts or nuts of the same specification are screwed at both ends.
4. Adjustable wrench: The width of the opening can be adjusted within a certain size range, and the bolts or nuts of different specifications can be twisted.
5. Hook wrench: Also known as a crescent wrench, used to twist flat nuts with limited thickness.
6. Socket wrench: generally called sleeve: it is composed of a plurality of sleeves with hexagonal holes or twelve-corner holes and is equipped with handles, posts and other accessories. It is especially suitable for the rotation position is very narrow or very concave. Bolts or nuts in the depths.
7. Allen key: An L-shaped hexagonal bar wrench designed to twist the hexagon socket head cap screws.
Uses: Specially used for fastening or disassembling round nuts on machine tools, vehicles and machinery.
8. Torque Wrench: It can show the applied torque when the bolt or nut is turned; or when the applied torque reaches the specified value, it will emit a light or sound signal.
