Adjustable Wheels for Sliding Door: fully adjustable barn door guide, adapts to doors up to 75 mm thick. Security design: Floor roller with special design, A flat bottom and rounded edges protect your toes and knees against injuries. Robust and durable: The adjustable door guide is made from carbon steel with a black powder finish to guarantee Use inside and out. Easy to install: wall mounting with screws, and no groove is required for the door. By adjusting the rollers in the rail to adapt to your door panel. No need to pierce holes on the floor. We promise you: We guarantee 1 year warranty. If you have any questions, please contact us first, we will contact you within 12 hours to solve the problem until you are satisfied. Size: 1 Package - Black Name: Adjustable floor guide. Content: 1 Steel bracket. 2 ribbed plastic dowels. 2 short screws. 2 long screw bolts. 1 key. Color: black. Fully adjustable for doors Up to 75 mm thick and easy installation. Perfect for your door: Fully adjustable for doors up to 75 mm thick and easily adjusted with the key included to guarantee most sizes or types of barn door. Fully recessed on the ground. Special design with lower cut slot to allow the pedal of the barn door to remain completely flat on the floor and fixing wall screws will be aligned with the support to avoid going out and scrape against The door.