Joysun Silicon Carbide vulcanized fiber discs are specially designed and manufactured with the high performance silicon carbide grains bonded onto a strong vulcanized cotton fiber. The self-sharpening SiC grains can perform fast and cool cutting, high stock removal and also can reduce thermal load on certain materials. They provide consistent coarse grinding all the way to polishing and finishing with an incredibly long service life. Joysun Silicon Carbide fiber discs are suitable for ferrous and non-ferrous materials, hard cast iron, stainless steel, brass, aluminum, plastic, fiberglass, wood, glass, concrete and stone.