Uses: suitable for grinding, polishing low tensile strength, brittle metallic or non-metallic. Such as gray cast iron, glass, ceramics, stone, carbide, agate is also widely used for measuring tools, cutting tools, grinding tools, grinding and polishing characteristics of the various cylinders: This product is one-component adhesives, safe , environmental protection, high temperature, corrosion resistance, chemical stability, high hardness and high toughness, wear resistance, can withstand a lot of pressure from the sharp sand constantly maintain long-lasting sharpness and other characteristics of the final product utilization rate above 96% Specifications: diameter (4 '' 4-4 / 2 '' 5 '' 6 '' 7 '') X aperture (16mm or 22mm) particle number: C36 - C320 Shabu utilization: 96%