Drop Forged, Chrome Vanadium Steel, Heat Treated. Hard stamped markings provide quick size identification. Use with hand ratchets or breaker bars. Includes: 1/4" Dr.: E4, E5, E6, E7, E8. 3/8" Dr.: E10, E11, E12, E14, E16. 1/2" Dr.: E18, E20, E22, E24. Supplied with impact blow molded case. Product description E Torx Star Female Bit Socket Set is made of hardened Chrome Vanadium steel to make every socket strong. Package Includes: 14 x E torx socket set 1 x blowing mould case