I'm shipping the other one back tomorrow and have just ordered the one above instead.
Page I ordered from: Rear Bumper Guard - Bumper Shield Magnum | Receiver Hitch Step that helps eliminate rear end collision damage | shock absorbing hitch step | Superbumper | Bumper Shield
I emailed the company and the owner got back to me with this:
This is what I ordered. It looks very well built but I have not received my Model X yet so can't test it for now. I'll probably add 3M Scotchcal Reflective on it so it is more visible in the dark