Built by Mission and featured on their skates, these Hi-Lo ABEC 9 bearings comes with chrome steel races and balls that are sure to last. They are pre-lubricated with synthetic grease and are pre-spun from the factory, meaning they are ready to roll right out of the box. Unlike most other bearing kits, these come a full set of long-sleeved and a full set of short-sleeved floating spacers.