This Faithfull Diamond Bit Set contains the six most popular 1/4in drive hex screwdriver bits and a quick release magnetic bit holder. The bits are manufactured from S2 steel and have a coating of minute diamond particles on their tip to bite into the screw head and provide extra grip. This helps to prevent accidental slipping or cam out that can cause damage when screwdriving. The set is supplied in a sturdy, flip down storage case. Contains: 1 x Slotted screwdriver bit: 5mm. 6 x Pozidriv screwdriver bits: PZ1 (2), PZ2 (4). 2 x Star screwdriver bits: T30. 1 x 1/4in Drive stainless steel magnetic bit holder 60mm.