Extraordinary Quality This folding barn door hardware kit has the advantages of being sturdy, rust proof, wear-resistant, and corrosion-resistant. The rolling bearings are composed of high-purity bearing steel and nylon wheels, paired with high-strength industrial grade flat tracks, which can easily support doors weighing up to 260 pounds. Strict testing is conducted before leaving the factory to ensure product high quality. Smoothly and Quietly The folding barn door hardware kit will use super silent nylon wheels, with a pivot plate and rubber strip at the bottom, ensuring smooth and quiet sliding of the wheels on the track while also ensuring the safety of the door edges, extending service life, and achieving quiet and smooth free opening and closing. Select Product Select and install according to the following proportions for safety and aesthetics. Door thickness: adapts to 1-3/8" (350mm)to 1-3/4" (450mm)door thickness.