The Faithfull 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, including 18 of the most common security fixings used in industry on appliances and toys. Features Manufactured from hard-wearing S2 steel, these bits provide a long working life. Used in conjunction with the quick-release magnetic bit holder, they can be swiftly changed without the need to open the drill chuck. The set is supplied in a sturdy impact resistant plastic storage case. Standard Equipment 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