It looks like a 2" in the picture but it isa 1.25". I usually keep the winch up front and a ball hitch on the back. The picture shows a few other modifications I made such as tie-downs and equipment holders to keep things in place.I was ready to spray a field with 2-4D(?) that day with my lovely helper. She drives and I stand in the back and spray! Thats why one of my next projects is to build a boom sprayer I can mount using the rear receiver. I really like seeing the mods everyone makes and seeing the different ways they use their RTV's.</P>