Depressed Center Grinding Wheel: Type 27, 7" x 1/4" x 5/8"-11, Zirconia Alumina, 24 Grit

High-performance contaminant-free grinding wheels are optimized for use on carbon and stainless steel are made of zirconia alumina abrasive and have less than 0.01% iron, sulfur, and chlorine to prevent rust and corrosion. Zirconia alumina is more durable than aluminum oxide and self-sharpens to maintain a sharp cutting edge. Contaminant-free abrasives are often used for food processing and nuclear applications.