Features and Benefits: High polish finish prevents against rust and corrosion For use in 1/2 in. drive tools Durable and easy to use 6-point standard socket The K-Tool 16 mm 6-point Socket is made of heat-treated chrome vanadium steel for durability. Our sockets feature high-polish chrome finish which protects the tools from the harsh working environments found in today s workplace. Socket is marked with part number and size for ease of use.