Martin Tools 41mm Box Wrench

Metric Striking Face wrenches are drop forged from steel bar. These wrenches are available in fractional sizes from 1-1/16" through 3-1/8" and in metric sizes from 32mm through 80mm. They come in an Industrial Black finish. When tightening a nut, the thick end is perfect for use with a hammer. This makes tightening easier. A special purpose single end 45 degree offset pattern box wrench with 12 point opening at one end and striking face anvil at other end. Designed for heavy industrial service where nuts must be set up tight or "frozen" nuts loosened.