wheel bearing made in china 1.High precision & quality 2.ISO 9001 certified 3.Low noise,Stable in chemic wheel bearing made in china Material: chrome steel STEEL NO.COMPONENTCSiMnCrMoPS ... , Inch R series,MR Series,RLS series,RMS seriesSpecification:1) Open, Z, ZZ, RZ,2RZ,RS, 2RS 2) Clearance: C0, C2 ...