The STEELMAN 42139 1/2-Inch Drive 12-Point Standard (SAE) Socket Set is an 11-piece set containing the following popular sizes: 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, and 1-inch. Made from drop forged and heat treated chrome vanadium steel these sockets feature a ball detent recess on the 1/2-inch drive end to help them hold securely onto ratchets, adapters, and extensions. The sockets have an attractive high polish chrome finish that provides increased rust and corrosion resistance that is easy to wipe clean when oily or dirty. Easy to read socket size callouts are hard stamped into the steel and won't fade or rub away.