Adjustable Floor Guide: Use high-quality materials. The frame is made of corrosion-resistant carbon steel and is black powder-coated, making it durable. The satin finish is more beautiful. The total weight of the floor guide is 0.15 kg. It is suitable for doors with a thickness of 2.5 to 5 cm. Unique Design: This type of pulley stopper is lightweight and concealed, suitable for indoor and outdoor use, and can be perfectly matched with various barn door styles. Smooth Sliding: The wheel rotating perpendicular to the side not only makes sliding smoother and quieter, but also saves more space. The flush design with the bottom will not damage your beautiful floor. Easy Installation: No need to cut grooves in the door or drill holes in the floor. You can adjust the position of the roller as required depending on the door leaf.