R10-2RSNR Sealed Ball Bearing with Snap Ring 5/8" x 1 3/8" x 11/32" Inch One Bearing R10-2RSNR Sealed Ball Bearing with Snap Ring, Bearing inner diameter is 5/8" Inch, Bearing outer diameter is 1 3/8" Inch and Bearing width is 11/32" Inch, bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.