Widely used: The door mounting tool kit has adjustable height and width, suitable for French doors, pocket doors, bifold doors, steel frame doors, fire doors, barn doors and other heavy duty doors from 1-10/32 inches.(Note: Door mounting kit lowers the door to 11/32 inches. Door mounting kit raises the door to 1-3/8 inches (approximately 3.9 cm). Free your hands and easy to use: only one person can install the door.This door mounting kit helps you move the door with a single hands-free installation.The door lift has four 360° rotating wheels with brakes, making it easier to move and stop during installation. [Prevent damage] The door is protected by double-sided foam glue, which clamps the door on a large area to prevent damage to the door and make the clamping stronger.Make home decoration safe and effective. Load bearing 700 lbs: Door installation tools are made of industrial thickened alloy steel, which is not prone to or deformation.Professionally tested to withstand doors or panels up to 700 pounds. Color: Black Material: Metal Package Contents: 1pcs x door lock installation kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.