RollerBones 8mm Bearings (16 Pack) Features Pack of 16 Bearings Internal Diameter: 8mm (608RS) High-Speed Nylon Ball Retainer for Greater Strength and Speed Pre-Lubricated with Speed Cream Racing Lubricant Removable Non-Contact Frictionless Rubber Shields Fast, Long Lasting, & Easy to Clean Precision Ground Skate Bearings Spacers Not Included MADE TO SKATERollerBones bearings, from the world-leading Bones Bearings, are manufactured with internal geometries and clearances specifically modified for Roller Skating.PERFORMANCEThese bearings offer the greatest combination of performance, durability and value. Because they provide unapparelled performance at a fraction of the price, they have become one of the best-selling bearings worldwide.FAST, LONG LASTING, EASY TO CLEANThe removable high-speed nylon ball cages. Just pop the shield off your roller bones bearing, clean & re-lube with speed cream for the best performance.16 PACK 8MM BEARINGSBones Bearings brings you RollerBones, the roller skate version of their best-selling Bones Reds Bearings. They come in a pack of 16 Bearings, enough for 1 pair of skatesPlease Note: You will require 2 bearings for every wheel whether Skates, Skateboard, Longboard, or Scooter!