Product review (5 stars): Great for cleaning out dryer vents!
In combination with a shop vac in either the vacuum or blower setting, this tool is great. I used it to clean out my dryer vents and it was amazing how much lint had built up in there. It could have been a serious fire hazard.

Tip: Make sure you tighten the poles to each other very well so that they don't come undone while using your drill. Furthermore, make sure your drill is set in the clockwise direction (the setting for tightening screws) so that if any are loose, they will tighten as you use it.