[Adjustable Floor Guide] It uses high quality materials, the frame is made of corrosion-resistant carbon steel, black powder coated, makes it durable, the frosted appearance is more beautiful. The total weight of the floor guide is 0.33 pounds, it is suitable for 2.5cm to 5cm thick door.[Unique Design] This type of pulley stopper is light and concealed, it is suitable for indoor and outdoor use and can be perfectly matched with various styles of barn doors.[Smooth Sliding] The rotating wheel perpendicular to the side not only makes the sliding smoother and quieter, but also saves more space. The flush bottom design will not damage your beautiful floor.[Easy to Install] There is no need to reserve grooves on the door, or drill holes on the floor. You can adjust the roller position according to your door panel as you like.[Seller Guarantee] We offer 5 years warranty and 30 days unreasonable return. If any parts you receive are missing or have problems during use, please feel free to contact us and we will resolve the problem for you within 24 hours.