NN3008M2KC1NA Nachi Cylindrical Roller Bearing 40mm x 68mm x 21mm Bronze Cage : Tapered Bore Made in Japan NN3008M2KC1NA Nachi Cylindrical Roller Bearings, Steel Cage, Made in Japan, the NN3008M2KC1NA inner diameter is 40mm, the NN3008M2KC1NA outer diameter is 68mm, NN3008M2KC1NA width is 21mm.