I used this bearing to replace the front bearing on my RC plane's e-flite power 15 motor. When installing the front bearing use a tiny bit of super glue or something similar to prevent the bearing from sliding in and out of its aluminum housing. You'll notice upon removing the stock bearing that a minimal amount of glue was used to prevent this. If you want the flanged bearing for the rear of the motor please look up (P N: SF605ZZ) on this website. If you're a beginner like me you may want to buy a couple as I've damaged a few motor shafts and bearings. You can also find the shaft for this motor (P N:EFLM40151) at Horizon Hobby.