Air wedge bag pump for leveling and alignment - 3 piece set1、Great for multiple jobs and applications such as, Precise Alignment and Leveling. Air lift non-marking shim for window, door, cabinet installations, appliances, HVAC, plumbing. 2、3 sizes to meet all your personal needs, including carry-on / storage bags and pry bars. 3、With rounded corners, stiff durable edges, smooth exterior and internal stiffener for easier insertion, our wedges are designed for ease of use. Quick easy push button air valve for precise leveling with one finger. 4、Fits into tight 3/32 inch gaps and opens to 2 1/2 inches wide with one hand pump operation. 300 poung load rating for maximum weight capacity. 5、Will not damage, leave marks, or scuff material it comes into contact with unlike pry tools, wooden shims or other wedges used to lift, level, plumb, shim and align material. 6、Allowing a single installer to do the job of many. Our Shim Bags will help hold in place and level counter tops, door frames, window frames, cabinetry, and more! 7、Useful prying tools for safely removing and installing car audio, exterior and interior trim, dashboards, door panels to avoid scratching the car.