Yes, I have a guess. I think it is for the center driven tiller. Looks somewhat like one that I had. Perhaps has been modified to provide additional drag.Thanks Rol. If it is a drag bar then it must be missing something, it looks like another part should fit inside of this one with a pin through the hole to adjust something. Maybe this isn't for the tiller that it came with, maybe it is for another Ingersoll implement. Anyone have a suggestion or guess?