... /GCr15 2.Fast Delivery Clearance:C1,C0,C2,C3 Insert Ball Bearing With Flange Housing F205Specification:1.Bore diameter: from 12mm to ... /chrome steel--China,(AISI)52100--American,(Din)100Cr6--Germany4.Certificates:ISO9001:2000,ISO/TS169495.Feilds Used in: Motorcycle, Motor, Pump, Fan ...