... -61 3.High precision,ABEC-1,P0 3/16 inch ,4.763mm ball bearing steel balls,used for bearings ABEC-1,P0 high ... precision ,good quality ,fast delivery timechrome bearing steel ball1)material:AISI52100 ... appliance bearings 3. High - speed, low noise special bearing 4. Ball valves for liquid and gas etc.8)packing:inner packing: ...