I don't know about pintle hitches. I thought I should have one I can plug into my receiver hitch incase I need/want to pull a pintle hitch trailer someday. I have come across one which, by the size of the bolt on holes, I think is rated at 10,000 lbs. I found out this rating by looking them up in the McMaster catalog and the only size with 1/2" holes was this rating, all the others were larger with higher ratings. It looks like the size of the ring should be a min of 2" inside dia. Most of the rings I see listed are 2 1/2" or 3". This seems sort of big, would rattle around in use? Can anyone educate me about pintle hitches and what is acceptable for ring sizes. Thanks, Tom