1.3/16 bearing balls used for bearings 2.Hardness:HRC58-61 3.High precision,ABEC- ... ,P0 3/16 inch ,4.763mm ball bearing steel balls,used for bearings ABEC-1,P0 high precision ,good quality ,fast ... bag/box for one gross outer packing:caton or steel drum inner packing and outer packing are also according to customer ...