【DURABLE MATERIAL】The air wedge pump is made of polyurethane rubber, durable enough to be used again and again, without scratching, leaving no marks. 【HIGH LOAD CAPACITY】The powerful hand air wedge pump lifts up to 297 lbs. Carry the gaps from 3/32 to 2 inches, folds and not under pressure. 【IMPROVED】 Replaces wood shims and metal scissors, poses no risk of damaging surrounding surfaces. 【EASY TO USE】 There is a round hole in the upper right corner of the bag to hang around your waist and safely handles large installations with a single installer, saving time and labor costs. 【VERSATILE】 Suitable for window and door installers, interior finishing shops, appliance and small equipment installers, other skilled tradesmen, such as appliances, beams, cabinets, doors, appliances, furniture, air conditioning, plumbing, wooden beams and more.