208KDD Shielded Bearing Single Row Radial 208 KDD208KDD Shielded Ball Bearing 40mm x 80mm x 18mm One Bearing 208KDD Shielded Ball Bearing, Bearing inner diameter is 40mm, Bearing outer diameter is 80mm and Bearing width is 18mm, 208KDD made from durable 52100 alloy steel, commonly known as chrome steel, has 2 Metal Shields to protect the bearing from dust or any possible contamination, 208KDD bearing is pre lubricated with grease. 208KDD Ball Bearing Deep Groove Ball Bearing Dimensions: 40mm x 80mm