The innovative 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. The NEW 4 FLUTE SPIRAL incorporates a MAXimized central core for increased durability and energy transmission. The 140? tip design ensures better bit penetration and longer life. Hardened Steel body for extra strength and reduced breakage.