6300-2RS Sealed Ball Bearing 10mm x 35mm x 11mm One Bearing 6300-2RS Bearing is double sealed, radial and deep groove ball bearing,6300-2RS bearing is made of Chrome Steel with chrome steel balls and steel cage,bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,6300-2RS is sealed and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed6300-2RS bearing is lubricated with grease.