I bought this gear to put on a Chinese tiller I could find no parts for. It had the same spline measurement, number of teeth, at 45 degrees and outside circumference. The length of the gear was about 1/2" too long, with a bulb end that I was able to cut off. It took several attempts to cut/grind it to the right length. I just in stalled it and it appears to be working great. ran the tiller for couple of hours today and seems smooth and quiet.