No pliers needed, just a hairpin or locking pin. I have an older pair of those as well as pat's. They are lighter in weight than pat's, but no less strong (my opinion). I ended up using pat's on the 3038e and the Carter on the 1025R. Both are better options than doing without (for me). On the carter, the two vertical bars capture The implement pin. A pin through holes in the bars goes over the implement pin. A hairpin holds The Carter pin in place. The rear bar is taller than the front bar so you can back into proper position more easily.
The Carter results in a bit more implement lift & keeps the lift arm length unchanged where pat's keeps lift height unchanged but increases the lift arm length. The Carter I bought was generic to its size category, not machine specific. The only adjustment for fit was shims (unless you do the weld-on version). That, for me, meant a bit sloppy side to side tilting. Not really a problem during use, but sometimes a small bit of aggravation during hookup when backing into position. The use of the spreader bar can fix that.
Like pat's, you need the stop washers at the implement pin ends.