6800RS Sealed Ball Bearing 10mm x 19mm xm5mm 6800RS Sealed, radial, deep groove ball bearing,6800RS 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,6800RS is sealed and self lubricated,the quality is set to EMQ (electric motor quality) to ensure high speed,6800RS bearing is lubricated with greased.