General description Makita Impact Black 57 Piece Bit Set is designed for impact drivers, featuring a high durability range suited for professional use. This set includes 31 Impact Black screw bits and a magnetic bit holder, all housed in a clear cover case. The unique black coating on the bits prevents rusting and corrosion, enhancing their longevity and performance under pressure. Technical specifications Set includes 31 screw bits and 1 magnetic bit holder 24 x 25mm Screw Bits: PH1, PH2 x 4, PH3, PZ1, PZ2 x 3, PZ3, T10, T15, T20 x 3, T25 x 3, T30 x 3, T40 x 2 7 x 50mm Screw Bits: PH2 x 2, PZ2, T20 x 2, T25, T30 1 x Magnetic Bit Holder: ¼” Hex 60mm Usage Designed for use with impact drivers Impact torsion zone provides extra flexibility to reduce breakage under stress Bits are 20% more durable than standard screw bits, lowering maintenance and replacement costs Other information Complete with a clear case for easy storage and organization