High Material CraftsmanshipThe door guide is made of hardened carbon steel with black coating, it is of high strength and long durability, Comes with installation hardware, so it is easy to adjust and install, safe to use for a long time Fully Adjustable All configuration options are easily adjustable to ensure a perfect fit. No matter what size or type of barn door you have, we guarantee this floor guide will provide a secure fit Smooth Gliding The rotating wheel perpendicular to the side not only makes the sliding smoother and quieter, but also saves more space. Flush bottom design will not damage your beautiful floor Unique DesignAdjustable zigzag design, firm, lightweight and concealed fixing, suitable for indoors and outdoors, and can be perfectly matched with different styles of barn doors. To maintain balance, a reliable door roller guide to prevent doors from swinging or scratching the interior wall Easy to Install There is no need to reserve grooves on the door or drill holes in the floor. You can adjust the position of the roller according to your door panel as you like. Great design looks great with many styles of barn doors