Product review (4 stars): Quality tool.
Works great. I would recommend an extra extension kit as I had to clean my vent from both ends. However, it worked out fine. The plastic fitting wouldnt fit my 4 vent tubing without flattening out the crimped edges, so I just didn't use it.  And I put a piece of tape on the reversing switch so I didn't accidentally run the drill backwards. Could be disastrous. Helps if you're not a large person, squeezing in between the washer & dryer was tough.