Robust; Safe] Double-sided TPU molding design for higher stress with higher abrasion performance. Superior compressive strength to lift up to 220 lbs. There are two air wedges in this set. By using two together, you can lift objects up to 440 lbs, and you can lift them more stably and safely. Super thin: It deflates like a balloon by pressing a button. When fully deflated, it is only 1.5mm thick, the air wedge is easy to fit into the small space, more application possibilities and storage convenience. which allows it to be more easily wedged into gaps without too much force. Easy to use: Simple tools with a simple pinch pump and precision bleeder valve allow for raising and lowering for perfect alignments, safely handle full-size installations with just one installer; Effectively save your assembly time and labor. Use again and again!] It is made of flexible resin, it is durable, anti-scuff cover sheets on markers, can be used repeatedly. Wide-range application: Our mounting pads are perfect for various tasks and applications, lifting and lowering, to achieve perfect alignment. Suitable for window and door installers, interior workshops, appliance and small equipment installers, other experienced craftsmen, such as appliances, beams, cabinets, doors, appliances , furniture, air conditioning, plumbing, wooden beams and more.