6202UU Sealed Ball Bearing, 6202UU is electric motor Quality, Bearing inner diameter is 15mm, Bearing outer diameter is 35mm and Bearing width is 11mm, 6202UU is made of Chrome Steel, each 6202UU bearing has 2 built-in Rubber Seals to protect the bearing from dust or any possible contamination, also the 6202UU bearing is pre-lubricated with grease.