Product review (1 stars): Financial disaster waiting to happen.
It is far from perfect! The plastic rod almost twisted in two on the first use, if that happened I would've had to hire somebody go to the attic take apart the metal stack pipe to retrieve it $$$. The corkscrew bristol helps pull itself up at approximately 2/3 of the way to the top without warning I felt no resistance the cordless drill turned freely, My first thought were it broke through the metal pipe at one of the joints. I started pulling it out that's when I noticed the damage section on the rod I took photographs and posted it with my review. This could be built so much better.