6002ZZ Shielded Ball Bearings 15mm x 32mm x 9mm Lot of 10 Bearings 6002ZZ Shielded Ball Bearings, Bearings are made of Chrome Steel, Bearing inner diameter is 15mm, Bearing outer diameter is 32mm and Bearing width is 9mm, also bearings are pre-lubricated with grease, each bearing has 2 metal shields to protect the bearing from dust or any possible contamination.