6208ZZ Shielded Ball Bearing 40mm x 80mm x 18mm One Bearing 6208ZZ Shielded Ball Bearing, Bearing inner diameter is 40mm, Bearing outer diameter is 80mm and Bearing width is 18mm, 6208ZZ Bearing is made of Chrome Steel, has 2 Metal Shields to protect the bearing from dust or any possible contamination, 6208ZZ bearing is pre-lubricated with grease.