United Abrasives- SAIT 23041 Type 1 3-Inch x 1/16-Inch x 3/8-Inch 25000 Max RPM A60T - Burr Free Cut-Off Wheels, 50-Pack Hard bond for smooth cutting. For use in nuclear, aerospace, automotive, foundry industries, and plant maintenance. Ferrous metals (iron, steel, welds, etc.). High tensile metals Type 1 shape for square, burr-free cutting Externally reinforced with fiberglass layers to provide ultimate safety in a thin wheel Wide range of grit sizes available for aggressive action to burr-free cutting