Tonsiki 33 Pcs Security Bit Set Tamper Proof Torx Hex Star Screwdriver 2-" Magnetic Extension Bit Holder. Torx head security bits sizes: T8, T10, T15, T20, T25, T27, T30, T35 and T40. Hex head security bits sizes: 5/64 in., 3/32 in., 7/64 in., 1/8 in., 9/64 in. and 5/32 in. Ideal accessory for cordless screwdrivers and drills variable speed drills. The compact pocket sized retainer keeps bits organised and ready for use.