[Adjustable Leg Width for Chairs] You increase the furniture's height by 100 mm, the table leg extension is suitable for table legs with a square or rectangular leg thickness of 0 mm - 50 mm (0~4 inches), please measure the furniture leg size carefully before purchasing. [Hard Plastic Material] The adjustable furniture lift is made of solid hard plastic and aluminum alloy. These furniture lifts are extremely durable and can easily lift up to 5,000 pounds. It is ideal not only for lifting beds and mattresses, but also for lifting bedside tables, sofas, tables, desks, cabinets, and shelves at home and in the office to make your legroom more comfortable. [Modified Screw Fastening Does Not Fall Off] You don't have to worry about the bed lift falling off. To solve this problem, we have improved the height of the adjustable bed with movable screw clamps without tipping. Adjust the accessories with screw clamps, the packaged furniture legs will not fall off easily. The adjustable sofa/bed/table lift is easy to install. [Create Free Space] The extra height not only increases the storage space under the bed, making vacuuming more flexible. They also allow the elderly to get in and out of bed more comfortably. Add 100 mm of height to beds, sofas, armchairs, tables, couches, and other heavy solid furniture to prevent shoulder and neck pain caused by low furniture height. [Protect Your Hard Floor] The underside of the heavy-duty sofa legs is designed with felt pads to protect the floor from scratches. The sturdy and smooth edges reliably support the weight and do not create dents or cracks on wooden floors or hard surfaces. Protects wooden floors, tiles, and linoleum floors from damage and wear.