Product review (5 stars): Just as advertised
Exactly as advertised with fast shipping.  Was able to get the vent clean and the dryer sensor is now off.  I had to buy a second one as the length i needed was about 20 feet.  I didn't see extension pieces for sale. overall very pleased.  Dont let the lint build up, it costs more energy to dry your clothes and is also a danger for causing a fire .  My only recommendation would be to have a set with more than 12 ft for anyone who has a vertical dryer vent like i have in my home.