Forged, heat-treated chrome vanadium steel. Stamped markings for quick size identification. Suitable for use with manual ratchets or tool bars. Includes: 1/4" Bits: E4, E5, E6, E7, E8. 3/8" Bits: E10, E11, E12, E14, E16. 1/2" Drill: E18, E20, E22, E24. with an impact-resistant molded case. Product Description The E-Type Torx Star Bit Socket Set is made of hardened chrome vanadium steel, making each socket strong. Set Includes. 14 Piece E-Type Torx Bit Socket Set 1 Piece Blow Molded Case