Product review (2 stars): good price... cheap product
I purchased this after thinking that since we have bought our house, we have never cleaned the dryer duct... And who knows the last time the previous owners cleaned it.  So I sat down one saturday morning to clean it all out... starting with the shorter brush and vacuum connector, i cleaned out the dryer itself the best I could.  It was amazing how much junk came out of it.  then I moved on to the in wall duct.  My house has about 15 feet of dryer duct in the wall.  after working the brush around in the duct for about 5 minute, I removed the brush and then it immediately fell off the wire extention....  this could have been disasterous had it fallen off inside of the wall..  I made due to get the rest of the lint out of the duct using things I had laying around the house BUT i would not recommend this product to anyone.