Product review (5 stars): Works Great!
Worked great on my dryer.  The larger diameter brush fit perfectly in my exhaust tube.  And the long flexible brush did a good job cleaning out the lint trap (top mounted on my dryer)  and inside/underneath the dryer.

Live in a condo where it is required to have our vents cleaned yearly (should be done this often anyway). But at $50 a cleaning, this has already paid for itself!