CASOMAN 35 Pieces Torx Bit Socket and External Torx Socket Set 25 Star Socket Bits (T8- TT55) & 10 Female E-Torx Sockets (E4-E18) Bits made of premium S2 alloy steel for superior hardness and insure longevity,Cr-V steel sockets provide superior torque for greater turning power. 13 x Torx Star ： 1/4″Dr.: T8, T10, T15, T20, T25, T27, T30. 3/8″ Dr.: T40, T45, T47, T50, T55, 1/2″ Dr.: T60 12 x Tamper Proof Torx ：T8, T9, T10, T15, T20, T25, T27, T30, T40, T45, T50, T55 10 x External Torx ：1/4″Dr.: E4, E5, E6, E7, E8 3/8″Dr.: E10, E12, E14, E16, 1/2″Dr.: E18 Meets or exceeds ANSI performance standards. The CASOMAN 35 Pieces Torx Bit Socket and External Torx Socket Set, 25 Star Socket Bits (T8- TT55) & 10 Female E-Torx Sockets (E4-E18), Bits made of premium S2 alloy steel for superior hardness and insure longevity,Cr-V steel sockets provide superior torque for greater turning power. Meets or exceeds ANSI performance standards.