... :ball bearings3. Cage(Retainer):Brass cage,nylon cage,steel cage4. Quality level:Reach the same level as Japanes and European bearings5 ... high speed electric motors,auotomotive components,pups,machinery,Bicycle8. Normal export packing:color box,plastic tube,carton box,pallet9. We guarante ... ,/W33,K/W33NNU 10-280 K,/W33,K/W33 High Quality Cylindrical Roller Bearing