10-Pack Flanged Bearings FR168-2RS Sealed 1/4" x 3/8" x 1/8" Miniature BallFR168 2RS Flanged Sealed Stainless Steel Ball Bearings 1 4" x 3 8" x 1 8" inch Lot of 10 Bearings FR168 2RS Flanged Sealed Stainless Steel Ball Bearings, a standard bearing size with dimensions commonly used across many industries: 1 4" x 3 8" x 1 8" inch. each bearing is rubber sealed from both sides to protect the bearing from dust or any possible contamination, additionally, these bearings come pre lubricated with grease for smooth operation. FR168