Martin Box End Wrench, SAE, 7/8 in Wrench Opening, 12 Points, 7-1/2 in Overall Length, 1-3/8 in Box End Width, 5/8 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