3M™ door edge protection film makes sure a small mistake doesn't turn into a big problem down the road. As much as we all try to be careful with our cars, it's a common situation where a car door is opened and the edge bumps into the concrete wall of a parking ramp or the guard rail in a parking lot or the posts near gasoline pumps or any of a thousand other places. It seems like a small thing at first, but it's just enough to scrape or chip the paint. But once the paint has an abrasion, it could lead to further chipping or even rust. 3M™ door edge protection Film gives your car an important chip the clear-coated urethane measure of protection.