Please make sure whether the wheel size is suitable before placing an order!!! Thank you for your understanding. Features: -The wheel frame adopts a compression-resistant structure, which is tough and stable, and provides strong support for the wheels. -The unique step nail ball structure ensures that the wheels are evenly stressed at 360 degrees and rotate flexibly. -The wheel center is highly elastic, wear-resistant, quiet, and rolls smoothly. -Accurately fix the hole position, easy to install. -Suitable for bags, luggage, trolley case and you must have strong ability in DIY. Description: .