Carborundum Silicon Carbide Grinding Wheel Size: 6 inches Thickness: 1/4″ Hole Diameter:1-1/4″ Hole Diameter with Bushing: 3/4″ Grit: 60 & 80 Maximum RPM: 4,130 Made with durable silicon carbide abrasive Provides fast and efficient grinding Suitable for sharpening cutting tools and blades Ideal for grinding non-ferrous metals, carbide, glass, ceramics, and similar materials Designed for use with compatible bench and pedestal grinding machines Provides consistent grinding performance and long service lif