SAIT 28123 Bench Wheel Vitrified. Green silicon carbide grain. Extremely sharp grain for faster, burr-free cutting. Use on carbide tipped tools, cast iron. Vitrified bond for long life. For use on ferrous and /or non-ferrous metals. United Abrasives/SAIT is a world leader in manufacturing a broad range of grinding wheels, cutting wheels, coated abrasives, carbide burs, wire brushes, specialty products and much more.