Professional Combination Wrenches are made in the U.S.A., featuring SK's SureGrip® wrenching design on wrench box ends, which drives the side of the hex of the fastener, not the corner, to increase torque and avoid edge breakage, especially on rusted or damaged fasteners.Open end is angled 15 degrees for greater accessBox end design features a 15 degrees offset head for clearanceN/A