Sincereetali Adjustable Roller: It comes with an adjustable roller, which makes the door smoother. Easy to Use: Fix it to the wall with the screws, no extra wood is needed to make it work smoothly. It fits all types of door to provide smooth operation and comes with adjustment of the range from 2.5 cm to zero. MaterialThe sliding door floor guide is made of high-strength steel and POM nylon. Premium Design: The heavy-duty sliding door floor guide comes with a recessed design that gives it an excellent finish. And the door does not need grooves, which prevents damage to your door. Ideal SolutionThis sliding door floor guide is the best solution for home and is used with the floor, the door panel, and comes with an adjustable roller as well as 2 floor guides and 4 sets of screws to facilitate installation. Product Description Features: 1. Improves the appearance of the floor guide and protects the screws or bolts and increases their structural life. In addition, it can prevent scratching the door from exposing hard edges. 2. Optional assembly methods, this means that no matter what size your door is, it will almost certainly fit. 3. Coated with black powder surface, ensures corrosion protection and long service life. Sturdy and durable construction with flush bottom to ensure the floor guide sits on the floor without scratching the floor.