1.High-quality stainless steel ball 1.ISO9000,SAE standard 2.many dimentions&materials long life,high precision 3. ... b).Unbreakable c).grinding resistant d).High impact value e).High combined efficiency of grinding millApplicationhardware, bearings ... automobiles, motorcycles, bicycles, household appliances, chemical machinery, light textile machinery, food machinery and mining machinery, etc.Packing: ...