EXTREME DEWALT 2 SDS-Plus drill bit is amongst the very best in terms of its durability drilling life and speed. The Superior carbide grade ensures a tip with outstanding durability which gives consistent drilling life. Has a NEW 4 FLUTE SPIRAL which incorporates a maximized central core to increase the durability and energy transmission. Has a 140? tip design that ensures better bit penetration and longer life. Has a Hardened Steel body for extra strength and reduced breakage.