1.Bearing UCPX20 2.Excellent quality 3.Low friction moment 4.Delivery quick 5.Competitive price Bearing UCPX201.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.Feilds Used in: Motorcycle, Motor, Pump, Fan, Air conditioner, Microwave Oven ,Sewing Machine, Massage Chairs, Agriculture ...