Wide range of applications: adjustable floor tracks are suitable for sliding barn doors, wooden doors, sliding doors, cabinet doors, office doors, etc. Good Material: The sliding door floor track is made of POM plastic material, which has the characteristics of anti-corrosion, not easy to rust, good impact resistance and durable. Easy installation: The sliding door guide rail can be fixed on the door without groove or on the door with groove, no need to make a groove on the door. Minimalist Design: The door panel rails feature a classic black modern design style, which is lightweight and practical and matches most decor styles. Product package: you will get 4 pieces of adjustable floor rails and 8 pieces of screw accessories.