Product review (5 stars): Great little tool
Used it to clean an 11 foot horizontal run plastic pipe from the dryer to outside. Ran dryer on air-dry setting and the lint just came flying out, enough to fill a two gallon wash bucket (after I cleaned it up). They have a bag you can buy to put over the end of the pipe to catch the lint and I would recommend it to eliminate the cleanup requirement. Also, wear a dust mask because using this method of cleanup versus the vacuum cleaner method creates a lot of dust at the exit point. Follow the assembly directions for the extension pieces and use electrical tape to prevent them from unscrewing if you inadvertently reverse the drill. (It was very hard for me to control my natural reflex to reverse the drill when pulling the tool out.) Recommend this tool to anyone who has to clean an  inaccessible pipe run of more than 2-3 feet.