General description High-quality heavy-duty luggage repair wheels designed for suitcases, luggage, backpacks, and travel bags. These 50mm quiet rotating rubber replacement wheels are durable, silent, and long-lasting, featuring double bearings for flexible rotation. Technical specifications Wheel size: 50 mm x 18 mm Load capacity: Supports up to 51 kilograms Package includes: 4 wheels and a mounting kit Installation Easy to assemble without professional help. Ensure the tightness of the wheels for better gliding. Usage Replacement wheels are easy to clean and can be removed for maintenance. Before purchasing, measure the original wheels: 1. Outer diameter of the wheel. 2. Width of the groove in the wheel. 3. Length of the bolt (excluding nuts). 4. Diameter and width of the bearing hole in the tube.