Felo 51565 Security Bits. 25 x 1 inch Security Bits and MagnetHolder. Set Includes Hex Sizes: 4mm, 3mm. XZN Sizes: XZN M6, XZN M5, XZN M4. Torq Set Sizes: TS10, TS8, TS6, TS4, TS0. Torx Tamper Resistant Sizes: TX TR30, TX TR25, TX TR20, TX TR15, TX TR10. TriWing Sizes: 5, 4, 3, 2, 1. Spanner Sizes: 6, 8, 10. Clutch Sizes: 5/32 and 1/4 inch.