Milwaukee 7/8 in. & 1-1/8 in. #9 Step Drill BitJam Free Performance Dual flute design provides greater speed and control Rapid Strike Tip Creates fast, accurate starts and generates less heat Up to 50% more holes per battery charge: Greater user productivity 3 Flat Secure Grip shanks Reduces bit slippage in the chuck Up to 2X faster Optimized for cordless drills in high speed Up to 4X longer bit life Optimized geometry with Black Oxide coating to cut faster and produce less heat Laser engraved