Draper Security Screwdriver Bit Set includes 25mm 1/4" bits manufactured from chrome vanadium steel, hardened and tempered with a shot blast finish. Bit holder manufactured from zinc alloy steel with a chrome plated finish. Supplied in a heavy duty plastic case with plastic inlay to hold bits securely. Specifications Colour: Multi Material: Chrome vanadium steel What’s included 1 x Magnetic bit holder 4 x Cross slot: No.0, No.1, No.2, No.3 6 x PZ type: No.0, No.1, No.2 (x 2), No.3 (x 2) 3 x Torq: 6, 8, 10 4 x Spanner: 4, 6, 8, 10 4 x Tri - wing: 1, 2, 3, 4mm 6 x Security hex: 2, 2.5, 3, 4, 5, 6mm 6 x Security hex: 5/32, 9/64, 1/8, 7/64, 3/32, 5/64 9 x Draper TX: STAR security: T8T, T10T, T15T, T20T, T25T, T27T, T30T, T35T, T40T