... original bearing, 4.steel materialJapan NSK Deep Groove Ball BearingOur main products include deep groove ball bearings,miniature thin-wall bearings,and different types of low noise ... bearings.(1)Bore diameter:3mm-50mm(2)Bearing range:60series:606,607.608,6000,6001,6002,6003,6004,6005,6006, ... ,V,VV,DU,DDU,N(4)Material:Gcr15(5)Quality standard:ISO9001:2000(6)Chief uses:automatic transmission mechanisms, ...