Taper Roller Bearings 1.Material:Chrome steel/GCr15, 2.High precisionP5&P6 3.Unsual Product design, 4.So 3times longer life, Taper Roller Bearings30210 ... onise5)High precision :P5/P6class6) Consistency:100%pass rateMetric Tapered Roller Bearings Unit No.Base Dimension(mm)dDhWeight kg30210509021.750.54302115510022.750 ...