... Prices ! 1.High precision & quality 2.ISO 9001 certified 3.Low noise,Stable use High Performance Roller Bearings With ... Low Prices ! Material: chrome steel STEEL NO.COMPONENTCSiMnCrMoPS CuNiGCr150.95~1.050.15~0.350.25~0 ... .451.40~1.65≤0.10≤0.025≤0.25≤0.25≤0.3 GCr15 ... 1) Open, Z, ZZ, RZ,2RZ,RS, 2RS 2) Clearance: C0, C2, C3 3) Precision Tolerance: ...