... .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,non ... ,ZZ,V,VV,DU,DDU,N(4)Material:Gcr15(5)Quality standard:ISO9001:2000(6)Chief uses:automatic transmission mechanisms,home ...