12 Point Heavy Duty Striking Face Box Wrenches, 13 13/16 in, 3 in Opening

Special purpose single end straight pattern box wrench with 12 point opening at one end and striking face anvil at the other end. When tightening a nut, the thick end is perfect for use with a hammer. This makes tightening easier. Black industrial finish. Drop forged from steel bar and designed for heavy industrial service where nuts must be set up tight or 'frozen' nuts loosened.