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 about 7 cm. Air pump with hand pump and check valve, pumping and deflating is easy, and you can deflate the cushion again to adjust the correct height by pressing the button. The size of the mounting wedge is 16*16 cm, the rubber hose is 25 cm long and the load capacity is 200 kg. One person can easily lift heavy objects, which makes installation work very convenient. For lifting, adjusting, moving, fixing etc. Perfect for DIY enthusiasts, also very suitable for door and window installers, Indispensable for installing windows, blinds, also heavy doors. The size of the mounting bracket is 16 * 16 cm, the length of the tube is 25 cm and the load capacity is 200 kg. Has 2 cushions for 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 makes it possible to control the load reduction well. With just a few pumping processes, the belt can lift a very heavy object a few centimeters without using too 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 for lifting, adjusting, moving, fixing, lifting furniture, hanging doors, washing machines, installing doors and windows, raising the door for adjustment, locking the door in the frame for 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.