6309-2NSENR Nachi Ball Bearing With Snap Ring (C clip) 45mm x 100mm x 25mm Made in Japan 6309-2NSENR Nachi Bearing, Made in Japan, with a Snap Ring, the 6309-2NSENR inner diameter is 45mm, the 6309-2NSENR outer diameter is 100mm, 6309-2NSENR width is 25mm.