Adjustable function: Fully adjustable rollers ensure smooth and safe sliding. The bearings provide a very quiet and smooth glide when the door opens and closes. Adjustable double rollers to fit thinner panel. Practical function: The sliding door guide can be used with 3 inch thick doors, suitable for all brands of barn door. Countersunk screw design to make our floor guide rest on the floor, with no gap between the bracket and the floor, ensuring no damage to the floor. Easy to install: This floor guide is easy to install. Simply attach 2 screws to the bottom plate, adjust and tighten. Our floor guide is made of carbon steel and perfectly shaped to provide a flush fit with the wall and floor. Convenient to use: The built-in bearing of the door guide provides ultra-smooth rolling, easy to operate. Unique design: carbon steel frame with black surface of the holding roller, screw adaptation for maximum durability. If you really need a quality functional door guide, the ball bearing wheels are smooth and quiet. Specifications: Material: carbon steel Colorblack Thickness: approx.0.5cm / 0.2in Suitable: for 76mm thick sliding door Size : approx.10.5 * 4 * 5cm / 4.1 * 1.6 * 2in Package List:1 * Floor Guide1 * Screw Bag Accessory