This manual jack is constructed from 45 # solid steel, featuring a thickened and widened base design to enhance its load-bearing performance. Its inclined port design allows for easy insertion under objects, making it convenient to use in various scenarios. The jack has a single lifting capacity of 330 lbs. per unit, with 2 units working together for heavier loads, and can lift objects from 0 to 6.7 in. It stands at 12 in. in height, providing a stable foundation for lifting tasks. Designed with an innovative process, this handheld jack includes a labor-saving handle that is comfortable to grip and reduces effort during use. It is equipped with thickened high-strength springs and thickened solid guide rails, ensuring that despite being lightweight, it can withstand heavy loads. This design helps installers work efficiently and reduces fatigue, making it a practical tool for various lifting needs. The multifunctional hand lifting tool is versatile, suitable for installing doors, windows, cabinets, decks, and frames. It can also be used as a floor jack, drywall elevator, and wall tile height adjuster, catering to a wide range of construction and installation tasks. Adjusting the jack is simple: place it under the object to be lifted, press the handle to raise the object slowly, and while holding the handle, press the pressure plate to lower it to the desired height. This tool can replace various traditional tools, improving productivity and saving time and money.