I took delivery of the tow hitch cover but I think
@beewang was right, it's unnecessary. It fits but is a hair smaller so the gaps around are a bit more noticeable also it's in black where the original cover is the car color in my case MSM. Lastly they need some sort of plug for the hole otherwise foresee water leaking down into the hitch and possible the undercarriage. It works as advertised however.. so no fault of the producer/seller.
I will likely not be using it at this point unless something happens to the original. The weird 3rd party pry gizmos work fine.