... machinery,electric tools,power tools,sports apparatus,machines, etc 1- thin ball bearings feature:68,69series with open,Z,ZZ,RS,2RS,NR ... level:P0,P6,P5(ABEC1,ABEC3,ABEC5)6.service:prompt delivery,OEM available7.Advantage:competitive prices with excellent quality High Quality Thin Ball Bearings ...