Mazda Black Door Edge Guard Trim Molding All Models D.I.Y. Kit The Do-It-Yourself kit will include (1) piece of Black trim molding strip measuring 15 feet in length. The trim is 5/16 inches wide. 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 You will be trimming the Door Guard yourself into 4 separate pieces to fit. The Door Guard is very easily to trim to length with a pair of scissors or shears. 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 30 minute process that anyone can do