Product review (5 stars): Exellent product
Cleared a 29ft run, 10ft up connected to a an additional 19ft connected by a 90 deg. elbow. Purchased two kits which was 9$ cheaper than buying one kit and 12ft of extension. I used all the rods  giving me 24 ft. and one brush. off course being 2Ft short had to clean from both ends. I managed to twist and ruin one 2Ft. rod but that was not the tools fault. 10 ft. Inside the horizontal run to the outside was a birds's nest built with wet lint, sticks and grass which was packed tight and yes a dead bird. At first I thought it was lint packed solid so I took off the brush to first drill and loosen the obstacle. That worked so then used it with the brush which no doubt got hung up on the nest. That is when I twisted the one section. With the help of a large shop vacum the vent is clear and my girlfriend is happy.