Milwaukee Heavy-Duty Standard Self-Feed Drill Bit, 2-1/8" X 4-1/2" X 7/16" Hex (48-25-2122)

Heavy-Duty Standard Self-Feed Drill BitDelivers speed and endurance for repetitive drilling of large holesCenter-feed screw pilots the bit and allows the bit to pull through fastInside cutting plane shaves the hole radius for clean, smooth holes without pressureBits are resharpenable and include two removable, replaceable feed screwsCoated with a rust inhibitor