Some fish are afraid of their own shadow. Others have seen every fly known to man. So when you're up against the absolute pickiest of eaters, it's me to get technical. The precision line that casts well on any acon rod. Long front taper for beauful turn over. Longer head for control at distance. Smaller p diameter for presenng smaller flies. Haul zone extends usable head length. Ultra-thin running line shoots like hell, takes up less spool space.