1. Easy To Use: Usually at least two people are needed to install the door. But this door installation kit can help you move your door and install it manually by one person. Meanwhile, the toolbox does not require any accessories and can be used directly. The gantry elevator has four 360 degree rotating wheels with brakes, making it easier to move and park during installation 2. Suitable For 1 'to 23/8' Doors: The door installation kit is designed specifically for doors of different thicknesses from 1 'to 23/8'. You can install the door by adjusting the appropriate thickness with a knob. This tool is designed with a large anti slip pad area, which can effectively protect the door from damage. Anti slip pads are also used near the door to increase the loadbearing area and improve efficiency 3. Durable And Sturdy Design: The four corners of the door and car are reinforced with triangular shapes, which are not easily deformed and increase the loadbearing capacity. After multiple tests, each installation tool can withstand a pressure of 500 pounds (a total of 1000 pounds). In addition, using quality welding technology, its edges and corners will not scratch the skin when people use it 4. Multi Purpose: This door installation kit avoids scratches caused by the door leaning against the wall or floor, effectively protecting the door from damage. It is suitable for doors with a thickness of 1 inch to 23/8 inches, such as pocket doors, French doors, double folding doors, steel frame doors, or barn doors