Root's decks come with fenders or brakes to satisfy every rider out t. When you need a replacement brake, pick up a Root Industries metal replacement brake for your pro scooter deck. 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 Root Industries brake is a steel brake that works with the following wheel diameters: 100mm,110mm,115mm,120mm and the following wheel widths: 24mm. 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 Root Industries Scooter Brake is durable and was made to take on some serious abuse, whether you ride park or street!Root metal brake is ONLY compatible with Root Industries Pro Scooter Decks compatible with wheels up to 120mm Includes brake only; rear axle not included made of durable steel Simple installation with compatible Root Industries Air decks Available colors: BLACK