AISI1010/AISI1015/AISI1055/Asi1085 Carbon/Hight Carbon Steel Ball for Freewheel 52-58HRC with Good Quality Furniture Bearings, Bicycle and Automotive Compon Shandong Jinnai International Trade Co., Ltd. Base Info Description Pre:4.5mm Carbon Steel Ball AISI1010-1015 Carbon Steel Ball for Bicycle and Automotive Components Ball 0.371g Next:11mm/12mm/20mm AISI 1015 - AISI 1045 3.75mm 4.76mm Carbon Steel Ball G1000 for Bicycle Parts AISI1010-AISI1015