Product review (4 stars): Really Helped
I used this (finally) without the power drill. While it was hard to twist when fully extended, this was a great buy. It really cleaned my duct work well. I put it in and out several times, alternating twisting and not twisting. Then I blew from one side to the other using the vacuum and it was very clean. I was able to bend it around one 90degree bend but not more then that.