... Mold:OPEN,Z,ZZ,RZ,2RZ,RS,2RS Item No. Miniature Ball Bearing :Miniature ball bearings are machinery components, which comprise an outer ring, ... V13)Cage: Brass,Nylon,stainless iron,steel4)Hardness : 59-63 HRCApplication:Auto,tractor,machine tool,electric machine,water pump,agricultural ... their total satisfaction.Poducts ShowPackage Show 623 plastic miniature ball bearing/china/good quality/best price