6200-2RSNR Ball Bearing 10mm x 30mm x 9mm One Bearing 6200-2RSNR Ball Bearings with Snap Ring, the inner diameter is 10mm, outer diameter is 30mm and the width is 9mm, bearing has 2 Rubber Seals to protect the bearing from dust or any possible contamination, also bearing is pre-lubricated with grease.