Hitch for ball mount with pin to secure it to your vehicle hitch,
Also large clip to keep the pin in place.
Mount the ball size you need for your purpose.
Hole will accomidate 3/4" (or 19mm) diameter thread for the ball.
This thing is solid, part where ball mounts is very thick at 5/8", all welds solid.
It is zinc plated where most others are painted, paint does not hold up as well.
Is in real nice condition, seen limited use for one season.
You can buy a new painted one for about $40 and it will be rusted in no time.
cash only, meet in person at location shown on map, a public place