PTO shafts fall under the category of "ANYTHING GOES!!"
Besides length, the shaft can be splined, round, male, female,, on,,, and on,,,
I needed one for a RFM,, it was such an oddball, that I ended up finding it on eBay for $25 plus $10 delivery.
The pto shaft was brand new,, but, it was such an oddball,
the seller had very little of customer interest, and kept dropping the price.
I happened to luck out
