Features: 1. Completely adjustable rollers ensuring smooth and safe sliding. 2. Compatible with 3-inch thick doors, suitable for most barn door brands. 3. Easy to install—attach two screws to the floor guide plate, adjust, and tighten. 4. Built-in bearing provides smooth rolling operation for easy use. 5. Carbon steel construction with a black finish and matching screws for enhanced durability. Specifications: Condition: Material: Carbon Steel Color: Black Optional Type: Single Roller, Double Roller, Heightened Single Roller Thickness: Approx. 0.5 cm / 0.2 in Suitable for: 76 mm / 3 in thick sliding doors Size: Approx. 10.5 x 4 x 5 cm / 4.1 x 1.6 x 2 in Package List: 1 x Floor Guide 1 x Bag of Screw Accessories Note: 1. Please allow 1–3 mm error due to manual measurement. 2. Monitor settings may vary, so colors in images may differ slightly from the actual product. Please refer to the physical item for true color.