DeWalt DT70710 Extreme 2 HSS-G drill bits for metal have no-walk tips for clean, accurate starting and burr-free holes thanks to recessed cutting wings. They are suitable for portable drilling into alloyed and non-alloyed steel up to 900 N/mm2, and can be used in wood and plastics as well as thin metals and sheet metals. The Innovative EXTREME 2 drill bit is amongst the best in terms of its speed, life and endurance. Superior carbide grade for long life and greater durability. Optimised flute design allows efficient debris removal. Hardened body for extra strength and reduced breakage. Particularly suited to drilling sheet or thin materials where accurate burr free holes are required. Very effective in wood and plastic materials. Patented split pilot point design .