Adjustable Roller Position: Fully variable distance to accommodate wider barn door panels up to 57mm wide. Thickness (using a single wheel source), works equally well with thin doors, heavy duty DIY barn doors, no matter what size or type. [FLUSH TO THE FLOOR]: Our barn door guides are specially designed to allow the center shaft to lay absolutely flat on the floor without scratching the edges of screws/bolts/nuts, more stable and more beautiful. No door slot required, no floor drilling required, perfect for carpet/tile floors. [Easy and Quick Installation and Adjustment]: Sliding barn door floor track mounted to the wall with two screws, 8 different assembly options, detailed instructions/tools required, easy to install. Simply adjust and tighten the screws at the bottom to secure the 3 rollers where you feel best. [STRONG AND RELIABLE]: The black powder coated high tensile solid steel base will complement any decor style and provide visual appeal for many years to come; High-precision non-marking ball rollers ensure a smooth surface. Quiet sliding doors, no movement or shaking. [Universal Application Door Track]: And durable sliding door track/grid, suitable for all types of interior and exterior doors, top sliding for single/double barn doors, can be used in bedrooms, wardrobes, bathrooms, living room, kitchen, storage room, dining room, garage, etc. Quantity: 1 set Note: Nothing else is included, the color is based on the first picture, other pictures only show the effect Due to the difference between different monitors Due to the difference between the colors, the pictures may not reflect the actual color of the item. . Due to manual measurement. Please allow deviation. THANKS! Note: The data is all manual measurement, please allow 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received Delivery quantity: (according to the main picture)