61910-2RS Bearing 50x72x12 Sealed6910 2RS Ball Bearing 50mm x 72mm x 12mm bearing 6910 2RS Ball Bearing 6910 2RS, the 6910 2RS bearings are made from high strength Chrome Steel, 6910 2RS bearing has Rubber seals to protect the bearing from dust or any possible contamination, 6910 2RS bearings are self lubricated bearings, 6910 2RS bearings are already greased, the 6910 2RS bearings can rotate up to 5,000 RPM Double sealed ball bearings 6910 2RS 6910 2RS Closures: Two Rubber Seals