DeWalt HSS-R 1-10 mm Metal Drill Bit Set, 10-Piece

• VERSATILITY - Suitable for portable or stationary drilling in steel cast steel, alloyed and non-alloyed material, grey cast-iron, spherical-graphite cast iron, sintered iron, nickel, brass etc up to 900N/mm • PERFORMANCE - Non alloyed black oxide precision ground twist drill bit for rapid drilling, long life and excellent concentricity • BLACK OXIDE - Finishing for extended corrosion resistance. • APPLICATION - Metal, Wood and Plastic The HSS-R Extreme drill bits Sets from DeWalt has been manufactured to a very high standard courtesy of the innovative tapered web which greatly reduces breakage, while the gold ferrous oxide coating prevents overheating for longer bit life.