Product review (5 stars): Improve you drying time!
You will need a reversible shop vac to use with this kit.  The shop vac will blow the lint out from the dryer side.  You attach this kit to your cordless drill and use from the vent side.  The directions were easy to follow.  I highly recommend this kit.  Our new dryer kept telling us the vent was blocked.  Unfortunately, our dryer is about 30' away from the exterior vent so I had to buy some extension kits to hook up to this kit.  After cleaning the lint out drying time was greatly reduced.