Suitcase wheels, luggage wheels, repair wheels for suitcases, heavy-duty 50mm silent rubber wheels, universal swivel replacement wheels for suitcases/luggage/backpacks/travel. Buyers should measure the following specifications of the suitcase wheels to determine the size they need: 1. Measurement of the original outer diameter of the wheels (wheel size). 2, the inner width of the measuring wheel's groove (the width of the total installed width). 3, through the length measuring screw (without nut at both ends). 4, measured by the thickness of the tube and the diameter of the bearing hole width. + product♣ Size: Bearing inner diameter: 21 mm / * Inner diameter: 6 mm / * Wheel diameter: 50 mm / * Thickness: 18 mm / * Axle length: 36 mm. ♣ Installation: Simple luggage wheels, no professional instructions required, can be assembled by yourself, very convenient. Also make sure the wheel is properly sealed during installation so that the luggage wheels roll smoothly. ♣ Advantages: High-quality replacement wheels. Durable, silent, load-bearing, double bearings, flexible rotation. ♣ Load capacity: A single suitcase can carry up to 51 kg without deviation for safe and reliable use. ♣ Cleaning: The replacement wheels of the suitcase are easy to clean and can be removed for cleaning. – Installation: Easy to install, no professional instructions required, very convenient. Pay attention to the wheel's sealing during installation to ensure smooth rolling. Features: 2 * Suitcase wheel set (2 wheels, 2 axles, 2 axle bolts, 4 washers, 2 wrenches). Can handle a single load of 50 kg without problems, safe and reliable use.