General description This comprehensive 90 piece set comprises a range of 25mm and 50mm Impact Black drill bits, ideal for applications including screwdriving, cabinet making, joinery, assembly, and fixings. The bits are covered in a black coating to prevent rust, making them 20% more durable than standard screw bits. The set is supplied in a sturdy plastic case. Technical specifications Pack Quantity: 90 Length: Various mm Screw Head: Various Shank: 1/4" Compatibility and accessories 64x 25mm Bits: 5x PH1, 10x PH2, 5x PH3, 5x PZ1, 10x PZ2, 5x PZ3, 6x TX15, 6x TX20, 6x TX25, 6x TX30 23x 50mm Bits: 1x SL5.5, 1x PH1, 4x PH2, 2x PH3, 1x PZ1, 4x PZ2, 2x PZ3, 2x TX15, 2x TX20, 2x TX25, 2x TX30 1x 6mm Magnetic Nut Runner 1x Magnetic Bit Holder 2x Plastic Cases