Product review (5 stars): This is the right tool for the job
Cleaning out dryer vents and duct work probably doesn't lead anyone's list of fun things to do.  But given the fire risk of lint buildup, it's also something you can't ignore.  This kit (along with a shop vac and cordless drill) at least makes your task a little easier.  The instructions are very clear, the flexible rods easily go around corners and the brushes clear the lint very effectively.