The GEARWRENCH TORX® bit sockets use S2 steel for the bits providing exceptional strength and durability. Sockets are heat treated with a professional, full polish finish. Sizes are hard stamped on the socket portion for easy identification. Universal joint allows for greater access Hard stamped size markings Bright, full polish chrome finish easily wipes clean and resists corrosion Includes socket rail for storage and organization Include sizes E4, E5, E6, E7, E8, E10, E12, E14, E16