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Max Hardness: 275 BHN / 28
Up to 10 cutting edges distribute the cutting load evenly to maximize feed rates
accurate holemaking in steel and alloy materials up to 275 BHN (28
CHUCK ADAPTER 1/2" (HMD904
Hougen 4-12278 2-7/16" X 4" "12,000-Series" Annular Cutter doc-2 Max Hardness: 275 BHN /Item Details For use with Hougen Portable Magnetic Drills and many competitive models on materials up to 275 BHN (28. 5 HRC). They are made of hardened M2 high speed steel and are precision ground for excellent performance throughout the cut and long tool life. They require less horsepower and thrust to cut, and last much longer than traditional holemaking methods. "12,000 Series" cutters have a 3 4" diameter double flatted shank. Modified end tooth