About this item Adjustable sliding door rollers: Fully adjustable wall mounted barn door tracks for doors up to 75mm thick. SECURE DESIGN: The floor rollers feature a specially designed flat bottom design and rounded edges to protect your toes and knees from injury. Sturdy and durable: The adjustable metal barn door floor tracks are designed with white chrome rails. The stand is made of sturdy high quality steel, ensuring indoor and outdoor use. Package includes: 1 floor guide, 2 screws, 2 ribbed plastic anchors . We promise: We guarantee 1 year warranty. If you have any questions, please contact us first, we will respond to you within 12 hours and solve the problem for you until you are satisfied.