Product Description: Sturdy structure: Combined with thickened galvanized steel bracket and wheels made of high-quality TPR material, this gate wheel with brake can perfectly support 100 kg gate or fence. With the help of ball bearings, you can easily adjust the direction of movement. Built-in spring: The special design of the built-in spring not only prevents sand and stones from entering the spring to damage or scratch the spring, but also reduces the negative effects of rain and sunlight on the spring and increases the service life of the spring. .