General description Neilsen 34pc Torx Star Socket Bit Holder Set includes a comprehensive selection of sockets and bit holders designed for various applications. This set is ideal for both professional mechanics and DIY enthusiasts, providing the necessary tools for working with Torx fasteners. Technical specifications 34 pieces in total Drive sizes: 1/4", 3/8", and 1/2" Star socket sizes: E4, E5, E6, E7, E8 (5PC 1/4" drive); E10, E12, E14, E16 (4PC 3/8" drive); E18 (1PC 1/2" drive) Tamper star bit socket sizes: T8, T9, T10, T15, T20, T25, T27, T30 (8PC 1/4" drive); T40, T45, T50, T55 (4PC 3/8" drive) Star bit socket sizes: T8, T10, T15, T20, T25, T27, T30 (7PC 1/4" drive); T40, T45, T47, T50, T55 (5PC 3/8" drive); T60 (1PC 1/2" drive)