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Handy bit of kit. Use at least 4 self tappers to liner just to make sure you don't pull it off.
Worked very well but has to be secured with duck tape to the liner, don't try pushing a liner down a chimney without one!
As usual amazing service and good friendly advice, thanks again Arran an Julian!8
The nose cone lets the flexible flu slip down the chimney like a greased whippet! Highly recommended.