Makita D-54097 HSS Drill Bit Set 25 PieceThe Makita D 54097 HSS R Bit, 25 Piece, Set is suitable for drilling applications in steel and cast steel alloyed and unalloyed up to 900N mm tensile strength. Other materials include: grey cast, malleable cast iron, die cast metal, iron sinter, nickel silver, graphite cast iron, short chipping aluminium alloys, bronze, brass and hard plastics. Conforms to DIN 338 Standards. Specifications: Sizes: 1, 1. 5, 2, 2. 5, 3, 3. 5, 4, 4. 5, 5, 5. 5, 6, 6. 5,