Deep Groove Ball Bearing 1.low noise, long life, 2.profession design, 3.good bearing, 4.steel material deep groove ball bearingOur main ... products include deep groove ball bearings,miniature thin-wall ... ,2RS,Z,ZZ,RZ,2RZ,N,NR4)Material:Gcr155)Quality standard:ISO9001:20006)Chief uses:automatic transmission mechanisms,home ...