6210-2NSENR Nachi Bearings With Snap Ring (C clip) 50mm x 90mm x 20mm Made in Japan 6210-2NSENR Nachi Bearing with a Snap Ring, the 6210-2NSENR inner diameter is 50mm, the 6210-2NSENR outer diameter is 90mm, the 6210-2NSENR width is 20mm.