<p>Product description:</p> <p>Product material: nylon</p> <p>Size: The diameter is about 3.5cm, the height is about 7cm, and the error is about 1cm.</p> <p>Feature: 360° Smooth movement, the vibration sound is reduced to the lowest point, calmly respond to various road tests.<br /> Simple luggage Rolls. You can Install by yourself, Very Convenient. And Pay Attention to the Tightness of the Wheel When installation.So The Luggage Wheel Can Roll Better.<br /> </p>