China 10.5mm 0.413 Inch AISI440c Stainless Steel Ball for Seams, Medical Application Valves 4.721g, Find details about China Stainless Steel Ball, AISI 420c 440c Stainless Steel Ball G10-G1000 from 10.5mm 0.413 Inch AISI440c Stainless Steel Ball for Seams, Medical Application Valves 4.721g