This is indeed the correct bushing to adapt the sprocket bolt holder to the leg holder. However, I bought two of these and the quality of this part is far from perfect. One of the parts had excessive burrs, and where it was cut someone hadn't cut it all the way through. I filed the part and edited it to get it right. However, this doesn't seem acceptable for a US made part. The machinist who makes them should be ashamed to make such a part.