This luggage trolley case features durable leather construction with mute damping wheels designed for smooth and quiet operation. The wheels are wear-resistant, flexible, and easy to maneuver, supporting a single load of up to 60 kg without detachment issues. Quiet and flexible performance ensures safe and reliable use. Material: Metal + Rubber Bearing OD: 19mm Color: Black Bearing ID: 6mm Wheel Diameter: 40mm Wheel Thickness: 18mm Axle Length: 35mm Features: Wear-resistant, noise-reducing, load-bearing, double bearing design, 360-degree rotation, smooth sliding with minimal effort, improved ease of use compared to standard luggage wheels. Buyers should measure the following to ensure compatibility: - Outer diameter of the original wheel (wheel size) - Width of the wheel groove (installation width) - Length of the wheel rivet or screw (excluding nuts on both ends) - Diameter of the wheel rivet or screw pipe (bearing bore width) Package Includes: 16 sets of Luggage Suitcase Replacement Wheels (16 Wheels, 16 Axles, 16 Axle Screws, 32 Bearings, 32 Washers, 16 Wrenches) Note: Other products not included. Due to lighting and display differences, actual item color may vary slightly from the image. Measurement tolerance: +/- 1-3 cm.