202SZ Sealed Ball Bearing, 202SZ is electric motor Quality, Bearing inner diameter is 15mm, Bearing outer diameter is 35mm and Bearing width is 11mm, 202SZ is made of Chrome Steel, each 202SZ bearing has 2 built-in Rubber Seals to protect the bearing from dust or any possible contamination, also the 202SZ bearing is pre-lubricated with grease.