1.material:Chrome steel ,stainless steel ,ceramic 2.High quality&Fast delivery 3.ISO9001:2008 4.Grade:P0 P6 Pillow block bearing UCFL200 seriesSpecification:1.Bore diameter: from 12mm to 140mm:2.Outer diameter: from 47mm to 300mm:3.Material:bearing steel/chrome steel--China,(AISI)52100--American,(Din)100Cr6--Germany4.Certificates:ISO9001:2000,ISO/TS169495.Feilds Used in: Motorcycle, Motor, Pump, ...