The SK Hand Tool 15-piece, 12 Point SuperKrome Metric Combination Wrench features SK's high polish SuperKrome finish, to protect the tool in harsh work environments and provide maximum corrosion resistance. The SureGrip wrenching design on wrench box ends 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. Box ends are also countersunk to help lead the wrench over fastener heads. The open end is angled 15 degrees for greater access. The box end design features a 15 degrees offset head, for clearance and a smooth arc radius design. Made in the U.S.A.