800 Skateboard/Inline Skate Black Bearings works with Roller Hockey & Rollerblades Too Bronze Cage 100 Sets, each set has 8 bearings in a retail box, Quality Skateboard/Inline Skate 10Setsx8Bearings= 800 bearings, each set has 8 bearings inside a gift box, Work in RollerBlades and even Scooters, 800 Deep Groove Radial Ball Bearings, bearings are blacked, bearings have Bronze Cage that would make them faster, bearings have 2 Removable Black Seals, Bearings are made of Chrome Steel, each bearing has 2 Removable Black Seals to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with oil.