I don't have a picture handy but it's rated at 40,000 and uses a gooseneck ball. Seriously heavy duty.
Only issue is that you need to get a bushing made to put on a normal 2" ball since no one makes a 2" ball with that big a shank. Not too big a problem. Or just always tow trailers with a 2 5/16 hitch on them
Sean P. Clarke
WERA Motorcycle Roadracing