Adjustable with 8 different configuration options: Fully adjustable for doors up to 76.2mm thick. With 8 different configuration options, assemble the floor guide into a style that suits your sliding barn door. By following the instructions to install the guide, you think it looks better and works well on your doors. Flat on the floor and recessed with bracket: With a special design, this barn door guide allows the crankset to rest completely on the floor. The wall screws will line up with the bracket to protect the barn door from scratches. Sturdy and durable: The bracket is constructed from heavy-duty quality steel to ensure indoor use and outside. The Ferris Wheel is made from durable plastic that can roll quietly and smoothly to prevent scratching your door. Package Contents: 1 Steel Bracket, 1 Large Roller, 2 Small Rollers, 1 wrench and some bolts. Product Description Size Name: Floor Guide. Guide roller for sliding door with 8 notice options. Contents: 1 steel bracket. 1 large roller. 2 small rollers. 2 short screws. 2 long screw bolts. 2 screws. 3 bolts. 3 nuts. 1 key. Color: matte black. Durable and rust resistant. The sliding door guide is made of quality material, the premium steel bracket is made from sturdy and solid steel with matte black coating for a durable indoor and outdoor use. The thick powder coat provides complete protection against rust and corrosion. Perfect for your door: fully adjustable for doors up to 76.2mm thick and easily adjusted with the included wrench to secure most sizes or types of barn door. A quiet roller that stays safe from scratches. The large roller is made from durable plastic and specially designed to roll quietly and smoothly and avoid scratching your door. Fully recessed on the floor. Special design with lower cut slot to allow the door pedal to barn to lie completely flat on the floor and the fixing wall screws will be aligned flush with the bracket to prevent popping out and scraping against the door. Please contact us anytime if you have any questions about the products, we will reply to you in a timely manner