Professional tool for commercial or occasional use. Suitable for cordless Screwdrivers and drills with variable speed. Suitable for the repair and maintenance on electronic / electrical and mechanical equipment. Manufactured from chrome vanadium steel for strength and durability. Includes Phillips 2 x PH2, 3 x PH2, 2 x PH3 Flat / Slotted 4mm, 4.5mm, 5mm, 5.5mm, 6mm and 6.5mm Pozi 2 x PZ1, 3 x PZ2, 2 x PZ3 Torx / Star T10, T15, T20, T25, T27, T30 and T40 Hex / Allen 2mm, 2.5mm, 3mm, 4mm, 5mm, 5.5mm and 6mm Tamper Torx / Security Star T10, T15, T20, T25, T30 and T40 1 x Quick release bit holder 1 x 1/4" drive stubby ratchet (forward and reverse / 72 teeth / total length 90mm) Supplied in a storage case.