Champion XL200-1-1/16 RotoBrute 1-1/16-Inch HSS Annular Cutter, 2-Inch Depth Recommended for materials with a brinell harness number up to 275. Cut clean, bur free holes Precision pilot pins eject the center as a plug of steel Cuts cast iron, steel and ultra hard or exotic alloys Application use must be with Magnetic or stationary drill presses.