An 8ft 4wt 4 piece carbon rod.
This is an excellent all-rounder for the streams and smaller rivers.
The action is fast and progressive but not stiff, the tip is light enough to cast neatly at short range, and also protect light tippets.
While having enough power in the butt to push a larger fly in to the wind and put plenty of pressure on a good fish should be lucky enough to hook one.
8ft being a very useful length, long enough to give good line control and a bit of reach, while not too long to be awkward on those inevtiable over grown sections.