63003-2RS Sealed Ball Bearing 17mm x 35mm x 14mm One Bearing 63003-2RS Sealed Ball Bearing, bearing inner diameter is 17mm, bearing outer diameter is 35mm and bearing width is 14mm, Bearing is made of Chrome Steel, bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, bearing is pre-lubricated with grease.