Metric Deep Socket, 12-Point, 1/2-In. Drive, 21mm
1/2" drive, 21 mm, deep, 12 point, socket, polished chrome vanadium steel for rust & corrosion prevention & protection against chipping & flaking, hard stamped, large size markings for easy identification & durability, direct torque technology provides contact with the flat surface areas of the fastener, full lifetime warranty.