The patented Wedgee Wedge with integrated Strip Savers works like no otherwedge on the market. The curved shape allows quick and easy insertion,bypassing the window sash channel which blocks regular wedges. This extra depthgives you the working room you need to insert your tools in the doorcavity.The Strip Savers are slippery strips of hard plastic that make the insertionand use of a wedge easier in any situation. When you insert the Strip Saversprior to your wedge tool, you are going to prevent the weather stripping fromrolling back and damaging. The Strip Saver is thin enough that it will notcreate enough pressure inside the door to cause any damage.There is aquick instructional manual included oran online access code included with the kit that provides quick, experttraining on the proper use of the included tools. Curved shape Quick and easy insertion Bypass window sash Integrated Strip Savers Extra deep