These DeWalt Extreme Metal Drill Bits are suitable for portable drilling of steel, alloyed and non-alloyed up to 900N/mm². Strong central core with tapered web that greatly reduces breakage and no walk tip for easy positioning on curved surfaces. Features & Benefits • Suitable for portable drilling of steel, alloyed and non-alloyed up to 900N/mm² • An innovative tapered web greatly reduces breakage with a gold ferrous oxide coating preventing overheating for longer bit life • Three flat sides eliminate slipping in the chuck • Permanent size markings located above shank for increased visibility Specifications • Head Type: HSS • Diameter: 8.0mm • Working Length: 72mm • Total Length: 117mm • Pack Quantity: 1