These were actually better than I expected. I wouldn't however use power sweep kit for anything other than flue pipe as opposed to bare chimney or flue liner. Think those better done by hand with appropriate brush and possibly by a qualified sweep. But noo brainer for straight flue pipe and also did a friend's with 2 x 45 deg bends in and coped no probs. Decided to feed in by hand till saw orange filaments at cowl, just to get a feel for it, then did the sweepings on way down. Did several back and forth motions for each length of rod. Just remember to WD40 GT85 or some other thin dry lube on the metal fittings before and after to avoid soot sticking and corrosion. Had made a custom sweep sheet for my flue and had Henry attached to that so minimal muck. Look out for extra discount vouchers as well! Got this for 34.99 delivered. Who knows how long it will last !