Product review (4 stars): Very Good Tool
This tool is great.  I ranked it 4 only bc I was not the one to use it- my hubby did the work and he is not here to say if it is a 5 or not.

He had no trouble following the directions and since our dryer was being replaced he was able to clean the vent from both ends. We have a very long vent- over 15 ft. so getting in from both ends was important. On one end he used the tool attached to the drill and he placed the shop vac at the other end. Then he changed ends and did it again. He says next time he will do it all from the outside and just put the shopvac in next to the rotary cleaner and let it suck the debris up.  This is so he will not have to move the new dryer and take off the vent which has been very securely mounted onto the dryer when the guys came to install the dryer last week.  My husband feels that the vent will still get well cleaned from the one end. If your vent is shorter then the tool extensions you have no worries!

We had been quoted $125- $250 to have this work done!  Now we can keep up with it and hopefully get a longer life form our dryer and better drying times.

I am so glad we bought this!