8 Lives Ceramics are high speed skate bearings that are made to give you the smooth speed you need to ride faster and longer. Made of high quality chrome steel these bearings have ceramic balls that blast dirt and crap out of the bearings as you ride. And best of all, they won't rust, which means longer lasting bearings. Durable, lighter, stronger and faster than your regular steel bearings. Each package contains 8 bearings and 4 spacers in a beautifully designed reusable tin case, pre-lubed and ready to roll! High quality ceramic bearings at an affordable price! Note: These packs have 8 bearings each, so you'll need 2 for your quad skates.