China 11.9mm Low Carbon Steel Ball AISI1010-AISI1015 3.5mm 3.8mm 5.95mm 6.35mm 6.5mm Micro Ball Bearing Chrome/Low Carbon/Stainless Steel Ball DIN5401, Find details about China Steel Ball, Carbon Steel Ball from 11.9mm Low Carbon Steel Ball AISI1010-AISI1015 3.5mm 3.8mm 5.95mm 6.35mm 6.5mm Micro Ball Bearing Chrome/Low Carbon/Stainless Steel Ball DIN5401