... 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 ... ,OEM brand and China bearings etc. Retainer:Copper cage ,Nylon retainer, Steel retainer, Bakelite retainer,etcQuality:ISO9000,ABEC-1,Z1,Original and ...