Heavy-Duty Offset Striking Wrenches, 18 in, 4 1/8 in Opening

Features: Large striking surface | Heavy box walls provide greater torque transmission | Short handle permits work in close quarters | Offset provides clearance for knuckles and obstructions | Box opening remains on fastener when wrench is struck | Efficient transmittal of force to fastener | For where extreme force is needed to loosen or set large fasteners