I used this bearing to replace the rear bearing on my RC plane's e-flite power 15 motor. This bearing does not have a flange on one side like the stock one but it will still work just fine. If you want the flanged version of this bearing please look up (P N: SF605ZZ) on this website. If you're a beginner like me you may want to but a couple as I've damaged a few motor shafts and bearings. You can find the front bearing for this motor here on vxb.com (P N: S685ZZ) You can also find the shaft for this motor (P N:EFLM40151) at Horizon Hobby.