Dual cutting cams on outside edge creates saw tooth action for easier and faster drilling with clean entry and exit points * Asymmetrical chip breakers produce easily removed chips rather than long sawdust swirls * Sectioned rim and self cutting center point produces less heat and remains sharper longer * Cutting edges can be easily re-sharpened * Exclusive polygonal RotaStop shank provides optimal transfer of torque to cutting head and prevents damage from slipping in drill chuck