... :ball bearings3. Cage(Retainer):Brass cage,nylon cage,steel cage4. Quality level:Reach the same level as Japanes and European bearings5 ... ,high speed,long life7. Application:home appliances.low noise and high speed electric motors,auotomotive components,pups,machinery,Bicycle8. Normal export packing:color box,plastic ... K,/W33,K/W33NNU 10-280 K,/W33,K/W33 High Quality Cylindrical Roller Bearing