The 8% cobalt content maintains a sharper cutting edge and delivers a 4X longer life versus DEWALT Black Oxide bits.\n\nThe optimised tip and flute geometry delivers 2X the penetration speed, versus DEWALT Black Oxide bits, removes material faster and reduces heat build up.\n\nThe stronger central core delivers 2X the resistance to breakage versus DEWALT Black Oxide drill bits.\n\nThe ‘no walk‘ tip allows for easier penetration of all surfaces.