S6803-2RS Ceramic Bearing Si3N4 ABEC-7 Quality 17x26x5 Ball BearingS6803 2RS Ceramic Bearing Si3N4 ABEC 7 Quality 17x26x5 Ball Bearings S6803 2RS Bearing is double sealed, radial and deep groove ball bearing,bearing is made from stainless steel with Ceramic Balls (Si3N4) and Stainless steel cage,S6803 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 (ABEC 5 quality) to ensure high speed,S6803 2RS