Thanks for the reply.
with reference to
http://www.agrisupplyco.com/cgi-bin/...951.000000&l=1
I thought that the bottom part was female and slipped over the male
pto shaft that is on the tractor. And the top end in the pic is female and would except the female implement coupler.(basically in-line).
Does that seem to be right?
I understand the 'smooth" shaft one is for a pin.
Thanks again
Al