10 Sets=80 Skateboard/Inline Skate Black Bearings work with Roller Hockey Rollerblades Too Bronze Cage 10 Sets Skateboard/Inline Skate Black Bearings ,each set has 8 bearings in a retail box, bearings Work in RollerBlades and even Scooters 80 Deep Groove Radial Ball Bearings, bearings are blacked and 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.