6003-2RS Sealed Ball Bearings 17mm x 35mm x 10mm 6003-2RS Sealed Ball Bearings, Bearing is made of Chrome Steel, each 6003-2RS bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, 6003-2RS bearings are pre-lubricated with grease, Bearings 6003-2RS are packed 10 bearings in one plastic tube.