Proto 2625SW 1 9/16 Offset Strike Wrench. Black oxide finish. Large striking surface for surer blow contact and more efficient transmittal of force to fastener. Short handle permits use in close quarters. Box opening designed to remain on fastener when wrench is struck. For use where extreme force is necessary to loosen or set large fasteners. Heavy box walls provide greater torque transmission. Offset handle clears obstructions.