Pearl 's Bench Grinding Wheels feature a Silicon Carbide Abrasive Grain. These grinding wheels are for use on a bench grinder or floor standing grinder. These great wheels are resistant to water, oils and acids. Each wheel goes through balancing and ring testing to ensure you receive a quality product. One size wheel can fit many different machines by using the bushing set included with purchase of wheel. The Silicon Carbide Bench Grinding Wheel can be used for heavy stock removal and tool sharpening on ferrous and non-ferrous metals including Tungsten Carbide, stainless, steel and iron.