My dryer vent vacuum cleaner attachment is on it's way back to the manufacturer. This is a terrible non-functioning product. When you attach it to the vacuum cleaner and turn the vacuum on, the sidewalls on the tube collapse, allowing no air to get through. This is particularly true at the very far end of the tube where slits have been cut in the tube. These slits all close in on oneanother and don't allow any lint or even air to pass through. After about 30 seconds of trying to clean my dryer vent, my vacuum cleaner shut completely off from over-heating and I had to wait about 30 minutes to find out if my vacuum cleaner would still work (it did come back to life).I would not recommend this product for anyone.