General description Replacement suitcase caster wheels designed for heavy-duty use, these 50mm mute rubber universal swivel wheels are perfect for repairing luggage, suitcases, backpacks, and travel bags. This set includes 4 casters that provide a smooth and quiet rolling experience. Technical specifications Wheel Diameter: 50mm Thickness: 18mm Axle Length: 36mm Bearing Inner Diameter: 21mm Inner Diameter: 6mm Load Capacity: Up to 51 kg per wheel Installation These luggage wheels are designed for easy installation without the need for professional assistance. Simply follow these steps: Ensure the tightness of the wheel during installation for optimal performance. Measure the original outer diameter of the wheels. Measure the width of the wheel groove. Measure the length of the screw (without nut at both ends). Measure the thickness of the bearing bore width. Usage These replacement wheels are suitable for various types of luggage and travel bags, providing durability and flexibility