GMC 8" Chrome Door Edge Guard Trim Molding All Models D.I.Y. Kit Quantity 4 The Do-It-Yourself kit will include (4) piece of Chrome trim molding strip measuring 8" inches in length. The trim is 5/16 inches wide. This is NOT to cover the whole door, just to cover an accident prone area. The trim is made of flexible and durable high quality plastic. The Door Guard will prevent paint chipping if you door hits another car or wall. Or you can hide existing paint chips The Door Guard easily attaches to your door by just slipping into place. The Door Guard can also easily be removed in seconds. Installation is about a 10 minute process that anyone can do