1.Chrome steel bearing 2.low noise precision bearing 3.OEM quality standard guaranteed 4.Competitive price Good sevice, long life, high quality, high precision bearing, ISO9001:2000 certificate, http://fine-bearing.en.alibaba.comPoducts Details: StructureTaperTypeRollerBrand NamefineBore Size28.575 mmOutside Diameter73.025 mmModel NumberSET50, 02872/02820Precision RatingP0,P6,P5Seals ...