6204-2RSNR Sealed:Snap Ring Ball Bearing 20 x 47 x 14 mm 6204-2RSNR Ball Bearing with Snap Ring, the inner diameter is 20, outer diameter is 47 and the width is 14, bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.