Torx bit socket set includes: 1/4" drive T10, T15, T20, T25, T27, T30, T35, T40, 3/8" drive T45, T50, 1/2" drive T55, T60, T70; Tamper proof torx bit socket includes: 1/4" drive TT10, TT15, TT20, TT25, TT27, TT30, TT35, TT40, 3/8" drive TT45, TT50, 1/2" drive TT55, TT60, TT70 Torx Bit Socket: 1/4in.Dr-T6, T7, T8, T9, T10, T15, T20, T25, T27, T30; 3/8in.Dr- T40, T45, T47, T50, T55; 1/2in.Dr-T60, T70. Torx Tamper Proof Bit Socket: 1/4in.Dr-TT6, TT7, TT8, TT9, TT10, TT15, TT20, TT25, TT27, TT30; 3/8in.Dr-TT40, TT45, TT47, TT50, TT55; 1/2in.Dr-TT60, TT70. Torx Plus Bit Socket: 1/4in.Dr-TP8, TP10, TP15, TP20, TP25, TP27, TP30; 3/8in.Dr-TP40, TP45, TP50; 1/2in.Dr-TP55, TP60. External Torx Socket: 1/4in.Dr-E4, E5, E6, E7, E8; 3/8in.Dr-E10, E11, E12, E14, E16; 1/2in.Dr-E18, E20, E22, E24.