Martin Tools box wrench3/4

Box wrenches are drop forged from steel bar. These wrenches are available in fractional sizes from 1/2"" through 1-1/2"" in Industrial Black finish. They are special purpose single end machinist's wrenches with straight pattern 12 point closed box opening and large diameter heavy handle. The extra head thickness provides maximum fastener contact; and they are designed for heavy industrial service.