Adjustable Sliding Door Rollers: Fully adjustable barn door guide, fits doors up to 75mm thick. Safety Design: Floor roller with special design, flat bottom and rounded edges protect your toes and knees from injury. Sturdy and Durable: The adjustable door guide is made from carbon steel with a black powder-coated finish to ensure indoor and outdoor use. Easy to Install: Mount on the wall with screws, and no groove is needed for the door. By adjusting the rollers in the track to fit your door panel. No need to drill holes on the floor. We Promise: 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 Pack - Silver Name: Adjustable Floor Guide Package: 1 x Steel Bracket 2 x Ribbed Plastic Plugs 2 x Short Screws 2 x Long Screw Bolts 1 x Wrench Color: Black Fully adjustable for doors up to 75mm thick and easy installation. Perfect for your door: Fully adjustable for doors up to 75mm thick and easily adjusted with the included wrench to ensure most sizes or types of barn doors. Fully flush with the floor. Special design with cutting slot lower to allow the barn door pedal to sit completely flat on the floor and the wall mounting screws will be flush with the bracket to prevent them from coming out and scraping against the door.Good quality product