20-Pack 629-2RS Bearings 9x26x8mm Rubber Sealed629 2RS Sealed Ball Bearing 9mm x 26mm x 8mm 20 Ball Bearings 629 2RS Sealed Ball Bearing, these bearing are sealed with rubber seals to protect the bearings from dust or any possible contamination, 629 2RS are made from high strength Chrome Steel, these are self lubricated bearings (bearings are already greased). 629 2RS Ball Bearing Deep Groove Ball Bearings dimensions: 9mm x 26mm x 8mm Bearing Inner Diameter: 9mm Bearing Outer Diameter: 26mm