Product review (5 stars): Amazing!
This product is the real deal.  It works just as advertised and the amount of lint that came out of my 10 year old dryer vent was amazing.  My DeWalt 18V drill spun the brush with no problems and the brush does an excellent job of self-feeding itself.  The shop vac attachment for the dryer is designed for a larger sized hose than my vac has so I sealed my hose to the attachment with duct tape and the vac did a great job of reverse flowing lint out as the brush was operating....watch out for that first blast of lint blowing out on your first pass.  The included length of rods was just enough to reach my dryer.  I've ordered and received the extension kit to clean my parents' dryer.  I highly recommend the cleaning kit and it'll be part of my home's yearly maintenance.  Get one and you may just prevent a fire with it.