This Faithfull Screwdriver Bit Set is a useful addition to any toolkit. The 30 screwdriver bits are made from S2 steel and include the most popular types and sizes. Also included is a square drive adaptor and a quick-release holder. Contains: 7 x 25mm Pozi Bits: PZ0, PZ1, PZ2 (x4), PZ3 4 x 25mm Phillips Bits: PH0, PH1, PH2, PH3 5 x 25mm Slotted Bits: 3, 4, 5, 6, 7mm 7 x 25mm Hex Bits: 2, 3, 4, 5, 6, 7, 8mm 7 x 25mm TORX (Star) Security Bits: TTX10, TTX15, TTX20, TTX25, TTX27, TTX30, TTX40 1 x 1/4in Hex to 1/4in Square Drive Adaptor 1 x 1/4in Quick-Release Magnetic Ejector Bit Holder Supplied in a sturdy plastic case.