Looks like a Neapco, but that's more of a guess, it could also be a Weasler. It's not a metric dimension shaft from any of the European suppliers. If it came from any of several models of New Holland hay equipment, it may well not telescope. Some balers and Haybines use drivelines with the telescoping section in the second shaft, not the first.
More info would be helpful. Certainly you didn't find it growing from a tree branch?