Feature: 1. Single Person Installation: The adjustable door lifter tool features a door mounting kit that allows for single person installation without requiring support from walls or the ground. Equipped with four 360° swivel wheels with brakes, it ensures effortless mobility during installation and allows for secure stopping, enhancing safety and work efficiency. 2. Heavy Duty Load Capacity: Constructed from heavy duty stainless steel, our door installation tool offers a robust design with a stable load capacity of 330 pounds. The black powder coated finish not only provides a slick appearance but also guards against erosion. Each wheel is equipped with a locking mechanism to deliver additional stability and security during use. 3. Adjustable Thickness Compatibility: Designed to accommodate door thicknesses ranging from 1.18 to 1.97 inches, the door lifter allows easy adjustment for various door sizes. Whether installing prehung doors, front doors, or slab doors, this multifunctional tool guarantees a safe and slick installation process suitable for diverse applications. 4. Non Slip Pads: The bottom and sides of the heavy duty door installation kit are fitted with non slip pads that guard doors from damages during the installation process. This feature increases the finish area of contacting and enhances work efficiency by providing a stable and secure footing for the door. 5. Multi Dimensional Adjustment: The door board installation tool allows for vertical height adjustments, making it convenient to install doors of different sizes and heights. It caters to both home handcraft projects and professional applications, offering versatility and ease of use for users of all experience levels. Specification: Item Type: Heavy Duty Door Installation Kit Material: Stainless Steel Clamping Range: Approx. 5.7cm / 2 1/4in(Maximum) Maximum Load Capacity: Approx. 150kg / 330lbs. Package List: 2 x Door Installation Tools