General description These heavy-duty suitcase casters are designed for easy replacement of worn or damaged wheels on luggage, suitcases, and backpacks. Made from high-quality mute rubber, these universal swivel wheels provide a smooth and quiet rolling experience, making travel more convenient. Technical specifications Wheel diameter: 50mm Thickness: 18mm Axle length: 36mm Bearing inner diameter: 21mm Inner diameter: 6mm Load capacity: Up to 51 kg per suitcase Installation Simple installation without professional instructions. Ensure the tightness of the wheel for optimal rolling performance. Usage Ideal for replacing wheels on suitcases, luggage, and backpacks. Easy to clean; wheels can be removed for thorough cleaning. Other information Buyers should measure the following suitcase wheel data for compatibility: 1. Original outer diameter of the wheels. 2. Width of the wheel groove. 3. Length of the screw (without nut at both ends). 4. Tube diameter thickness of the bearing.