Specifications of adjustable wrenches: 150mm×19mm(6'), 200mm×24mm(8'), 250mm×30mm(10') and 300mm×36mm(12'). The adjustable wrench consists of a head and a handle. The head consists of an adjustable plate lip, a rigid plate lip, a plate mouth, a turbine and a shaft pin. The size of the plate mouth can be adjusted by rotating the turbine. The specifications are expressed in length×maximum opening width (unit: mm).

Extended information:

The adjustable wrench is also called an adjustable wrench. Its opening width 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 a common tool for maintenance workers. Because its opening can be adjusted within a certain range, it is very convenient to use. It can be used not only for standard metric bolts and imperial bolts, but also for some self-made non-standard bolts.

The inventor of the adjustable wrench was the Swede Johan Petter Johansson (1853-1943), who invented the adjustable wrench in 1892.