The Lenox Tools 1095006A1616 6-Inch by 1-Inch Bi-Metal Utility Bit is "Tougher than Nails". The high speed steel cutting edge provides long life in tough applications, including nail embed wood. The bit leaves clean holes and the three cutting edges allow the bit to be very fast. These bits can also be resharpened using the Lenox Diamond file for even longer bit life. Due to the smooth and effortless drilling, this bit is ideal for cordless drilling to extend battery life and the life of the tool.