The District fender ONLY works with District decks. Slide your existing brake out of the deck and slide in the fender. It's that simple. Only works with wheels up to 110mm. T were scooter brakes and then t were fenders. So, which should you buy? Easy, if you want to be able to stop, pick up a brake, which you can actually press down on with your rear foot to stop your whip. If you don't want that rear brake to inadvertently stop your wheel when your foot hits it on a big landing, you want a fender. Please note that a fender does not function as a brake and will not stop you. In other words, you're going to wear out a lot of shoes. The District Fender is a plastic fender that works with the following wheel diameters: 100mm,110mm,115mm,120mm,125mm and the following wheel widths: 24mm,26mm,28mm,30mm. Should you purchase metal or plastic brakes? It depends. If you are looking for the lightest possible setup - go nylon or plastic. If you want a durable brake that's going to last a long time, pick up a steel brake. The District Scooter Fender is durable and was made to take on some serious abuse, whether you ride park or street!replacement fender for District decks compatible with wheels up to 110mm Includes fender and mounting hardware made of durable delrin plastic Available colors: BLACK