6211-2NSENR Nachi Bearings With Snap Ring (C clip) 55mm x 100mm x 21mm Made in Japan 6211-2NSENR Nachi Bearing with a Snap Ring, the 6211-2NSENR inner diameter is 55mm, the 6211-2NSENR outer diameter is 100mm, the 6211-2NSENR width is 21mm.