The air cushion is made of thick TPU material, which is very durable and wear-resistant. The valve is completely sealed and won't leak for repeated use. The airbag is very flat and only 1.5mm thick, making it easy to push into tight spaces. Air pump with hand pump and check valve, pumping and deflating effortlessly, you can deflate again by pressing the button to adjust the proper height The size of the mounting pad is 16*16.5cm, the rubber hose is 25cm long, The load is 200 kg. One person can easily lift heavy objects, which greatly facilitates the installation work. For lifting, aligning, moving, fixing, etc. Great for do-it-yourselfers, also great for door and window fitters, essentials for installing windows, shutters, and even heavy duty doors Delivery Quantity: 3 Pieces Product Color: Black Product Size: Tube Length 25 cm, 16 x 16.5 cm