The Vevor labor-saving arm jack set is designed to lift, support, and position heavy items such as doors, windows, cabinets, beds, and furniture. This 2-piece set offers up to 7.7" of lift and supports up to 440 lbs static capacity per pair for installation, cleaning, repair, and woodworking tasks. Built with cast aluminum and steel, it features dual descent modes for either precise placement or faster lowering. A three-way magnetic level helps improve alignment and positioning during use. Its compact design and non-slip support surfaces make it practical for both professional and DIY applications.