Keep your CNC cutting tool machine, cylindrical grinder or surface grinder operating efficiently with this Norton® 25A AO Type 01 toolroom wheel. The aluminum oxide abrasive is friable so it breaks down at a controlled rate for continual sharpness. Use the wheel on hardened, forged and stainless tool steels and cast iron for consistent grinding at high metal removal rates. A durable bond post provides maximum grain retention and form holding with less dressing to ensure a long wheel life. A controlled porosity bond keeps the wheel cool, thanks to an increased chip clearance and coolant flow.