Stanley Proto JSN18 12 Point Striking Wrench 1-1/8",Stanley Proto,JSN18" /> Non-reflective ProtoBlack finish for use where non-plated products are required. Large striking surface for surer blow contact and more efficient transmittal of force to fastener. For use where extreme force is necessary to loosen or set large fasteners. Straight handle design helps prevent the wrench from cocking when struck. Heavy box walls provide greater torque transmission.