black fused alumina has good features as high hardness, strong tenacity,better bonding ability and hydrophilicity, giving less heat, good self-sharpening, smooth surface and high finish. it’s suitable for polishing various spare parts such as:bicycles,sewing-machine,hard metal tools,medical apparatus, timepieces,glass products and stone grinding.it’s also the right material for making abrasive tools: fiber- reinforced cutting wheels, grinding wheels, sand cloth, paper and paste