The Lucky D Fender is for those riders who ride a Lucky pro scooter deck and want to go brakeless and rock a fender. The Lucky fender only works with 110mm wheels so if you ride 120mm or larger wheels, you will need to look elsewhere for a fender option. There were SCOOTER BRAKES and then there 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 Lucky fender is a plastic fender that works with the following wheel diameters: 100mm,110mm 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.