Product review (5 stars): Line was completely clogged
I bought two of these, because it was cheaper to buy this kit twice than to buy an extension kit. I ended up needing all 24' to clear the whole line. Turned out my vent was completely clogged. I had to attack the clog from inside the house and out. The attached pictures only show some of the lint I cleared out of the line. This is the first time in about 15 years that I have cleaned this vent, but I will be using this tool on a regular basis moving forward.