Summary

This is a simple cover for a trailer hitch.
My neighbor bought a new Lexus and didn't like the trailer hitch being exposed, so I printed this for him.
I'd fill it at 65% and although it locks in place fairly well, you can run a bolt through the hole to keep it in place.
Since the model will be outside, I'd only print it in PETG or ABS unless you plan on painting it (inside and out).