The upgraded, thickened manual jack showcases exceptional features tailored for efficiency and durability. Crafted from robust 45# solid steel, it boasts a widened base for unparalleled load-bearing capacity and stability. Its optimized inclined port design simplifies object insertion, while its impressive 330LBS single lifting capacity ensures it tackles even the heaviest tasks with ease. Ergonomically designed with a labor-saving handle, thickened springs, and solid guide rails, it minimizes fatigue and enhances user comfort. Lightweight yet sturdy, this jack's versatility is unmatched, suiting tasks from door installation to cabinet lifting and beyond. With seamless height adjustment achieved through simple handle pressing and pressure plate control, it streamlines the lifting process, eliminating the need for multiple tools. The ultimate gift for craftsmen, fathers, or husbands, this jack boosts productivity, saves time and money, all while ensuring safe and secure lifting operations.