MATERIAL: This inflatable air bladder is made of high-quality TPU rubber material. Safe, non-toxic, usable, reusable. It's anti-slip ability is very strong. APPLICATION: The airbag jack is widely used in door and window installation positioning air cushion can comprehensively solve the problem of quick fixing, and adjusting horizontal and vertical during the installation process of aluminum alloy doors and windows, swing doors, wooden doors, stainless steel doors, and copper doors, instead of quick positioning of cork. Load-bearing: Highest 250kg, reusable, can adjust the installation height of doors and windows, horizontal shift, is indispensable for door and window installation! It is also used in other industries to save time, effort, and efficiency! Save manpower, material, and financial resources! PROTECT THE MATERIAL - Unlike other tools or wood shim, it will not damage or wear and contact the surface of the object during use.The tool is also commonly used as a spacer when installing interior doors, leveling furniture, UPVC windows, doors, kitchen appliances, etc. Package: The Air Wedge Bag kit include 2pcs inflatable air wedge and 1pcs Pry Bars, Easier and more convenient to use. Pelesaurea Air Wedge Bag, Professional Air Wedge Pump Leveling Kit