ATK67 6 Point Star Security Bit Set with Security Bits (Torx TR Style with Pin In Hole), for Screwdriver Handle for 1/4 Inch Bits. Tool Sizes T4, T5, T6, T7, T8, T9, T10, T15, T20, T25) 10 bits total, in high quality CRV 6150 Tamper resistant sizes with hole in tip : T7 T8 T9 T10 T15 T20 T25 Sizes without hole: T4 T5 T6 Comes in black holder Common 6 point star Torx shape, fits all standard bit drivers .25 inch bit shaft