HIGH-QUALITY MATERIAL CONSTRUCTIONThe door tracks are made of hardened carbon steel with a black coating for high strength and durability, and come complete with mounting hardware, so they're easy to install. adjust and install, safe Can be used for a long time FULLY ADJUSTABLEAll configuration options are easily adjustable to ensure a perfect fit. No matter what size or type of barn door you have, we guarantee this flooring guide will work for you.Safety Smooth slidingSwivel wheels perpendicular to the sides not only make the sliding smoother and quieter, but also save space. Flat bottom design will not damage your beautiful floors Unique designAdjustable zigzag design, firm, lightweight, concealed fixing, suitable for indoor and outdoor, can be perfectly matched to different styles of barn doors. For balance, roller guides Door guards to prevent doors from swinging or scratching interior walls Easy to installNo need to reserve a groove on the door or drill holes in the ground. You can adjust the position of the rollers according to your door panel. Great design is perfect Different styles of barn doors Product Description Features: 1. High quality two wheel flat bottom floor rail kit. 2. Made of hardened carbon steel with black coating for high strength and durability. 3. The size can be adjusted. 4. Maintain balance to avoid swinging and ensure the barn door slides smoothly. 5. Self-contained hardware installation, easy adjustment and installation, long-term safe use. 6. Excellent design goes well with many styles of barn doors. Features: Material: Carbon Steel Color: Black Dimensions: approx. 115*65*50mm Package Contains: 1 * Door Track Hardware Kit Note: Easy to install, but professional installation is highly recommended.