I have the Iron & Oak (Brave) 3-point mount model, the one that does NOT use the tractor hydraulics, but rather has its own pump that mounts on the PTO shaft and has its own tank. I believe it's discontinued. It is a 6" beam, but this dislodger does NOT fit it - the relief in the dislodger frame for the control valve port on the cylinder is on the wrong side.
Now, with some modifications it can be made to work (I did keep it) and is nicely made. Just be aware it will not fit the Iron & Oak PTO model without mods.