6820-2RS Sealed Ball Bearing 100mm x 125mm x 13mm 6820-2RS Bearing is double sealed, radial, deep groove ball bearing,bearing is made of Chrome Steel with chrome steel balls and steel cage,6820-2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,bearing is sealed and self lubricated,the quality is set to EMQ (electric motor quality),6820-2RS bearing is lubricated with grease.