Adjustable with 8 Different Configuration Options: Fully adjustable for doors up to 7.5 cm thick. With 8 different configuration options, assemble the floor guide in a style that suits your sliding door. Follow the instructions to install the guide that best suits you and works well on your doors. Flat to the Floor and Flush with the Bracket: This specially designed barn door roller guide has been specially designed so that the bottom bracket of the barn door is perfectly flush with the floor. The wall screws will sit flush with the bracket to protect the barn door from scratches. Sturdy and Durable: The bracket is constructed from quality heavy-duty steel for indoor and outdoor use. The large roller wheel is made of durable plastic that can roll smoothly and smoothly to prevent scratching your door. Package Includes: 1 * Steel Bracket, 2 Pieces (1 * Large Roller, 2 * Small Rollers, 1 * Wrench and some bolts).