7211BMUC3T103K Nachi Angular Ball Bearing 40 Contact Angle Brass Cage, Flush Ground 55mm x 100mm x 21mm Made in Japan 7211BMUC3T103K Nachi Angular Ball Bearing, bearing is 40 Contact Angle, Brass Cage and Flush Ground, Made in Japan, inner diameter is 55mm, outer diameter is 100mm and width is 21mm.