DusterRT
Defected to Deutsche
Here's a link to the backing plate (Aerocatch calls it a "fixing" plate--how English of them): http://www.amazon.com/AeroCatch-Fixing-Nut-Plate-120-8000/dp/B00803C5UC
they're definitely worth it in my opinion. they should all come that way.
Those are nice! I made my own when I put my pins in, it took waaaaaay too long for something relatively simple. Wish I had known about those!