Martin Box End Wrench, SAE, 1 in Wrench Opening, 12 Points, 7-13/16 in Overall Length, 1-9/16 in Box End Width, 11/16 in Box End Thickness, Steel, Industrial Black
- Box wrenches are drop forged from steel bar
- They are special purpose single end machinists 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