Bearing has Rubber Seals to protect the bearing from dust or any possible , also bearings are pre-lubricated with grease.
Tags:$0 - $20,Ball Bearings,Bearings,Deep-Groove Ball Bearings,Power Transmission
Size - 54mm x 38mm x 17mm,50mm x 35mm x 20mm,47mm x 30mm x 18mm,55mm x 35mm x 20mm