Hougen 12238 1-3/16-Inch Diameter Rotabroach 2-Inch D.O.C. is an accessory for the "12,000 Series" Cutters, to be used on Hougen Portable Magnetic Drills and materials up to 275 BHN. This M2 H.S.S. Cutter features a 3/4-inch diameter shank, and is made of hardened, high speed tool steel and precision ground. The 1-3/16-inch cutter diameter is to be used with pilot 10528, and has a decimal equivalent of 1.1875. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.