Improved 3 Piece Commercial Grade Air Wedge Bag Pump Professional Leveling Kit DESIGN IMPROVEMENT - 300 POUND load rating ? Material thickness improved to 0.8mm ? Two side coating ?interior exterior?TUP durable material ? With rounded corners, stiff durable edges, smooth exterior and INTERNAL STIFFENER for easier insertion ACCESSORY IMPROVEMENT - 2 Piece free non scratch pry tool ? Hose lengthened to 10 inches ? Upgrade the 3rd generation push button air valve, thicker and more durable, precise leveling SAVE TIME?EFFORT - 3 sizes to meet a variety of work needs. Work done by many people may only need one person to complete.A variety of purposes, including moving and adjusting the level of. Air regulate shim for window, cabinet, door, installations, appliances! PROTECT THE MATERIAL - Unlike other tools or wood shim, it will not damage or wear and contact the surface of the object during use. SO MANY USES -- Appliances, Beams, Cabinets, Doors, Equipment, Furniture, HVAC, Plumbing, Joists, Countertop, Mantels, Bathroom Fixtures, Curtain Walls, Flanges, Windows, and more!