8 x 16 x 6 Stainless Steel Shielded Ball Bearing One Bearing 8 x 16 x 6 Stainless Steel Shielded Ball Bearing, Bearing inner diameter is 8mm, Bearing outer diameter is 16mm and Bearing width is 6mm, Bearings are made of Stainless Steel, Bearing has 2 Metal Shield to protect the bearing from dust or any possible contamination.