John Deere 4410, John Deere 4120, Kubota LX3310 cab, John Deere F725 Front Mount Mower, Swisher 60" pull behind mower. John Deere 4310 CUT (sold), Ford New Holland 575E Cab Backhoe (sold).
I use the #80717 Adapter Bracket from Agri Supply on my Agmate finish mower.
It doesn't work so great on my brush cutter. I think I used a short piece of chain on that last time.
Either use similar to what is pictured or replace the rear arms with chains. That is the primary issue with rotary cutters and quick hitches (beyond physically not fitting), the cutter side needs to float so that you can drive out of a low spot and not bend the rear support arms as you go up the hill. Or modify your rear arms with hinge that only allows it to hinge to the top and not towards the bottom.