Product review (2 stars): Not for long vents with bend.
The idea is nice, but we have a 24 dryer exhaust pipe and this doesnt actually turn once we get a few feet in. In fact, the line just kinks and doesnt go any further. We ended up just snaking it through with the little bullet thing, attaching the bruch and yanking it back through. We could have done that with a much cheaper option.