Premium Material: Durable TPU composite fabric wraps the 420D nylon material for enhanced wear resistance. The wedge-shaped air bag pump features a sturdy, smooth edge, allowing easy insertion into narrow spaces. Easy to Use: This air pump dunnage bag supports full-size installations with just one person. A simple pressure pump and precise bleeder valve enable smooth raising and lowering for accurate alignment. Ideal for positioning, adjusting, maintaining, lifting, and installing. Strong Load Bearing: The hand pump lifts up to 400 lbs with a span range of 3/32 to 2 inches. It supports a weight capacity of 150-200 kg, with an adjustable range of 2-80 mm. Helps save time and labor. (Note: Do not over-inflate to prevent damage to the bag or valve.) Convenient and Environmentally Friendly: Made with eco-friendly materials that are safe and non-polluting. The air pump wedge surface is constructed with TPU rubber, preventing damage to doors, windows, and other surfaces for a clean installation. Wide Application: Suitable for various tasks including precise alignment and leveling. Can be used with beams, cabinets, doors, equipment, furniture, HVAC systems, plumbing, joists, countertops, mantels, bathroom fixtures, curtain wall flanges, and windows. Number of Pieces Delivered: 3 Color: Green, Black, White Size: 15.5 x 16 cm