The Quick-Change Security Bit Set is a useful addition to any toolkit and contains 24 of the most popular 1/4in Hex Drive screwdriver bit types. Manufactured from hard-wearing S2 steel, these bits provide a long working life. Supplied in a sturdy impact-resistant plastic storage case. Contains: 3 x 25mm Pozidriv Bits: PZ1, PZ2 and PZ3.3 x 25mm Phillips Bits: PH1, PH2 and PH3.5 x 25mm Spanner Bits: 4, 6, 8, 10 and 12mm.7 x 25mm Star Security Bits: T10S, T15S, T20S, T25S, T27S, T30S and T40S.6 x 25mm Hex Security Bits: 2, 2.5, 3, 4, 5 and 6.1 x Quick-Release Magnetic 1/4in Hex Drive. Features: 3 x 25mm Pozidriv Bits: PZ1, PZ2, PZ3 3 x 25mm Phillips Bits: PH1, PH2, PH3 5 x 25mm Spanner Bits: 4, 6, 8, 10, 12mm 7 x 25mm Star Security Bits: T10S, T15S, T20S, T25S, T27S, T30S, T40S 6 x 25mm Hex Security Bits: 2, 2.5, 3, 4, 5, 6 1 x Quick Release Magnetic 1/4in Hex Drive Bit Holder Specifications: Dimensions: H:10.5 x W:3.5 x D:7.5 cm Colour: Silver Guarantee:5 years Material: Metal Model Numb