The air cushions are made of thick TPU material, which is very durable and not easy to wear out. The valve is completely sealed, does not leak, and can be used repeatedly. The air cushions are very flat, with a thickness of only 1.5 mm, and can be easily pushed into a small space. Without load, the cushion can be inflated to a maximum thickness of approximately 7 cm. Air pump with hand pump and check valve, pumping and deflating is easy, and you can deflate the cushion again Compatible with adjusting the correct height by pressing the button. The mounting wedge size is 16*16 cm, the rubber hose is 25 cm long, and the load capacity is 200 kg. One person can easily lift heavy Compatible with objects, making installation work very convenient. Compatible with lifting, adjusting, moving, fixing, etc. Perfect Compatible with DIY enthusiasts, also very suitable Compatible with door and window installers, Indispensable Compatible with installation of windows, blinds, even heavy doors. The mounting bracket size is 16 * 16 cm, the tube length is 25 cm, and the load capacity is 200 kg. Has 2 cushions Compatible with better balance. A hose with a manual pump can be inflated quickly and easily, and you can deflate it again with a button. The use of valves also allows for good control of load reduction. With just a few pumping processes, the belt can lift a very heavy Compatible with object a few centimeters without using Compatible with much force. There is a small round hole in the corner of the mounting bracket, you can hang it. A small helper in the toolbox Compatible with lifting, adjusting, moving, fixing, lifting furniture, hanging doors, washing machines, installing doors and windows, raising the door Compatible with adjustment, locking the door in the frame Compatible with marking and final adjustment, assisting with door assembly and disassembly, car repairs, etc. They are robust and handle heavy loads very well. This saves time and labor costs.