【Ideal Grinding Tool】- It has high brittleness, sharp abrasive grain and good thermal conductivity. Made of high quality silicon carbide, with high hardness and shape reminds you well. * It can be applied to grinding tools and can also be used in a variety of wear-resistant tools The grinding wheel is made of Green Silicon Carbide material. United Abrasives 28123 - Vitrified Bench Wheel, 8 x 1 x 1, GC60, 3600 RPM, Green Silicon Carbide Hard Material Grinding Utoolmart Bench Grinding Wheels 6 Inch Green Silicon Carbide Surface Grinding Wheel 【High Grinding Ratio】- Uniform particles, easy to sand, less wear and tear. Made of Green silicon carbide, with high hardness and toughness, the shape reminds well. * Suitable for grinding medium and high tensile strength metal materials Sharp abrasive, high hardness, good thermal conductivity, make your work easier Suitable for grinding cemented Carbide, optical glass, ceramics, gemstones, Agate, honing cylinder sleeve and other hard and brittle materials.