... chrome steel. 2.Noise Level Z1,Z2,Z3,Z4 3,GCR 15 GCR11 4.Certificate: TS16949. Deep groove ball bearingDeep groove ball ... : Open,Teflon Sealed,Rubber Seals,2 M...Number of Row: Single RowPlace of Origin: Shanghai China (Mainland)Structure: General,flanged ... : Oil,grease,dryNoise Level: Z1,Z2,Z3,Z4Type: Deep groove ball bearingPackage: Tube & Box Packaging & DeliveryPackaging Detail:Tube & BoxDelivery ...