Describe: - Suitable for bags, suitcases, trolley and you need to have strong DIY skill. - Easy installation and disassembly. - Wear-resistant, quiet, load-bearing, double bearing, flexible, easy to use as a luggage wheel without any problems. Specific: - Material: PP + PET - Diameter: 48mm / 1.9in Package includes: 4PCS Swivel Wheels (Left + Right) Note: Color may vary slightly due to different screens. Please allow 1-3mm error due to manual measurement.