1.high quality and reasonable price 2. Short delivery: ready goods in stock. 3.samples are avalible ball bearing with high quality and reasonable price.deep groove ball bearings:6000series, 6200series, 6300series, 6400 series, 6800 series, 6900 series, etc.Brand: SKF,FAG,INA,TIMKEN,NSK,NTN,KOYO,NACHI,OEM brand and China bearings etc. Retainer:Copper cage ,Nylon retainer, Steel retainer, Bakelite ...