... ",etc3. Grade: G100-G30004. Hardness (HRC):HRC58-655. Application: Bicycle, bearing, pulley, slide, handcraft, shelf, luggage, hardware, grinding media,Valve, aerosol ... , Flashing, Heat-treatment, Grinding, Lapping1, Lapping2, Inspection, Packing.Packing information of Stainless Steel Ball:Oily packing in pouch packing, plastic/tin box packing1, 25kg/carton with ...