Here's a couple of pics of the first set. The factory part is made of a .2mm piece of aluminum incased in plastic that has a rail on the bottom that is secured to the backside of the door panel with finger clips. On my car the top piece broke for what ever reason, leaving the rail still in the gap attached to the back of the door panel. My poly carbon part is much stronger and the 9mm tape secures the part to both the rail and material on the top of the door panel. I can bend my part considerably without any damage. Can't say the same for the factory part.
