The Air Wedge Alignment Tool is an inflatable wedge that can lets you raise andlower to perfect alignments. not only can uses around the home or office. but also can be used to life, level, and adjust kitchen units, cabinets, office equipment, refrigerator, and household appliances much more!Easy upgrade! New Redesigned stronger Release Valve, Use the air wedge shim can easy to align and level heavy equipment and move the equipment.Safely handles full size installations with just a single installer; effectively saving time and labor.How to Use:1. Opened the package, take out the air wedge, air wedge and tube are in a separate State2. Insert the tube, close the valve3. Keep squeezing, inflate wedge, when filled air stop4. Open the valve let air flow out when finished useMaterial: Polyurethane rubber.Package list:1. One Small Air Bag Pump Wedge Bag (6.9''*4.5'')2.One Medium Air Bag (6.7''*5.9'') 3.One Large Air Shim (11''*5.1'') 4. 1* Red Plastic Card tool Size: 8.4*1.1 in5. 4* Plastic Wedge/Shims/Pry Tool:Warningï¼1. Please leave half of the air wedge outside to make it stable and safe.2. Don't inflate excessively when operate, after being proped up, let the air out. Then put the triangle block.3. Please Avoid sharp objects in direct with the air wedge.