FR2-5 2RS Flanged Sealed Ball Bearings 1/8" x 5/16" x 9/64" inch Lot of 10 Bearings FR2-5 2RS Flanged Sealed Ball Bearings, this is a popular size that could be used in many application that uses this size 1/8" x 5/16" x 9/64" inch. each bearing has 2 Sealed to protect the bearing from dust or any possible contamination, also bearings are pre-lubricated with grease