Wrench is a commonly used installation and removal tool in life, used to turn bolts or nuts. There are basically two types of wrenches, dead wrenches and adjustable wrenches. The former refers to a wrench with a fixed number written on it, also called a dead wrench, and the latter is an adjustable wrench.
The opening width of the movable plate can be adjusted within a certain range. It is a tool used to tighten and loosen nuts and bolts of different specifications. The adjustable wrench is composed of a head and a handle, and the head is composed of a movable plate lip, a rigid lip, a plate mouth, a turbine and a shaft pin.
Dead wrenches are also called open wrenches, which are mainly divided into double-ended open-ended wrenches and single-ended open-ended wrenches. It has a wide range of functions, mainly in the fields of mechanical maintenance, equipment installation, household decoration, and automobile repair. The double-headed open wrench is a universal tool, a hand tool necessary for assembling machine tools or spare parts, transportation, and maintenance of agricultural machinery.
