8 Pieces 5 Point Torx Screwdriver Bits Set, Magnetic Torx Security Head 1/4 Inch Driver Bit Set,T8 T10 T15 T20 T25 T27 T30 T40, S2 With magnetic head that can be firmly fixed on screwdrivers, fit for electric screwdrivers, hand screwdrivers, electric drills, air drills and so forth. Specifications Color: As picture. Type of head: Torx with hole. Tool length: 15 (mm). Full length: 50 (mm). Function: Multipurpose. Material: S2. Alloy Steel. Whether it is magnetic: Yes. Size: As shown in the picture. Scope of application: Non-precision repair. Packaging included: 8 pieces. Size: 50mm (2 inch)*T8 with hole. 50mm (2 inch)*T10 with hole. 50mm (2 inch)*T15 with hole. 50mm (2 inch)*T20 with hole. 50mm (2 inch)*T25 with hole. 50mm (2 inch)*T27 with hole. 50mm (2 inch)*T30 with hole. 50mm (2 inch)*T40 with hole.