Looks to me like a wheel weight tool. Any manufacturer markings?
I don't think it's a tool, it looks like part of some kind of mechanism. The rusted part is a roller to engage a cam or something like that.

Its a bill hook for inside a baler! It ties the knot in the baler twine as the bales are coming out of a baler.
Heres a video, some what long and boring but very infromative.
Finally a whats it, that i knew, mostly from working on them!!!![]()
I know it is a knotter, but I'm not sure what it is out of. I have had one in my hand like that. I think it is from a grain binder.
Its a bill hook for inside a baler! It ties the knot in the baler twine as the bales are coming out of a baler.
Heres a video, some what long and boring but very infromative.
Finally a whats it, that i knew, mostly from working on them!!!![]()