1[Versatile Tool Set] The kit contains three inflatable shim bags of different sizes and four prying tools, ideally suited for various jobs and applications including precise alignment and leveling tasks. 2[Excellent Wear Resistance] Constructed from double sided TPU casting with 840D nylon material, the air shim pump boasts higher wear resistance for enhanced durability and reliable performance. 3[Improved Design] Featuring rounded corners, hard edges, and smoothly exteriors, the inflatable shim bag is designed to be easily inserted to withstand greater pressure, elevating your efficiency during work. 4[Easy Inflation] These air bag pumps inflate with just a squeeze, making them easy to use and minimizing the effort required during use. 5[Wide Application] From window and door installation to cabinet assembly, appliance setup, HVAC installation, and plumbing works, the air shim is perfect for a variety of installation tasks.