Posted by Sterling Luttrell [99.98.76.231] on Thursday, April 02, 2015 at 23:05:13 :
In Reply to: Re: PTO Drive Shaft posted by Bill in Mo. [97.85.240.31] on Thursday, April 02, 2015 at 22:22:38 :
I know vintage sells the hexagonal shafts. They are some kind of military application i think.