Purchased this product to clean an 8”metal flue approx. 20'H from the bottom up to tackle quite a bit of deposit build up.It did the job thoroughly as advertised in about an hour. Flue clean. No rod or drill binding. No noticeable wear to rather high gauge plastic whips.As for design, their could be improvements to push-button rod connection system, perhaps with locking ‘quick connects,' but it's a minor issue. Overall excellent.
Rating:
[5 of 5 Stars!]