61801-2RS Bearing 12x21x5 Si3N4 Ceramic Sealed Premium ABEC-5 Bearing Outer Diameter - 320mm Each bearing features double rubber

Each bearing features double rubber seals to block out moisture and debris

and customer satisfaction

Width: 49mm

Cage: Nylon Cage

OD (outer diameter): 16mm

61801-2RS Bearing 12x21x5 Si3N4 Ceramic Sealed Premium ABEC-5 Bearing Outer Diameter - 320mm Each bearing features double rubberS61801 2RS Sealed Ball Bearing Premium ABEC 5 Quality with Si3N4 Ceramic Balls (Silicon Nitride) 12mm x 21mm x 5mm S61801 2RS is double sealed, radial, deep groove ball bearing,S61801 2RS bearing is made from stainless steel with Ceramic Balls (Si3N4) and Nylon cage,S61801 2RS bearing is closed with rubber seals to protect the bearing from dust or any possible contamination,S61801 2RS bearing is sealed and self lubricated,the quality is set to EMQ