800 Skateboard/Inline Skate Black Bearings works with Roller Hockey Rollerblades Too BRONZE Cage 800 Skate bearings Work in RollerBlades and Scooters,800 Deep Groove Radial Ball Bearings, bearings have Bronze cage and bearings have 2 Removable Rubber Seals, Bearings are made of Chrome Steel, each bearing has 2 Removable Rubber Seals to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with oil.