Motorbike. Motorbike, Scooter Parts. Boat, Trailer. Heavy duty Inner Tube to fit Petrol Scooters. Bike Kits. Bike Parts. Car, Caravan, Boat, Trailer. This size inner tube will fit the following tyre sizes: 4.10/3.50-4 or 410/350-4 or 4.10-4 or 410-4 or 3.50-4 or 350-4 or 11x4.00-4 or 11x400-4.