High Material Craftsmanship The door guide is made of hardened carbon steel with a 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 that this floor guide will provide a secure fit Smooth Sliding The rotating wheel perpendicular to the side not only makes sliding smoother and quieter, but also saves more space. The flush bottom design will not damage your beautiful floor Unique Design Adjustable zigzag design, firm fixation, lightweight and concealed, suitable for indoor and outdoor use, 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, nor drill holes on the floor. You can adjust the position of the roller according to your door panel as you like. Great design is perfect with many styles of barn doors Product Description Features: 1. A set of 100% brand new and high quality flat two-wheel bottom floor guide. 2. Made of hardened carbon steel with black coating, it is of high strength and long durability. 3. The size can be adjusted. 4. To maintain balance, prevent swinging and ensure the smooth sliding of the barn door. 5. Comes with installing hardware, so it is easy to adjust and install, safe to use for a long time. 6. Great design is perfect with many styles of barn doors. Specifications: Condition: 100% Brand New Material: Carbon Steel Color: Black as picture shown Size: Approx. 115*65*50mm Package Included: 1 * Door Guide Hardware Set Note: Easy to install, but professional installation is highly recommended.