This is a quality built fly line manufactured for a small label company by Scientific Anglers. The line has been developed to be intentionally better for glass and bamboo rods as it has a smaller diameter while maintaining weight and float ability. I am offering these lines because i am of the opinion that they are the best match for our bamboo rods. They respond much more like the silk lines of days gone by, yet offer the modern day convenience of a line that never sinks. They are indeed dissimilar to the lines curreently being marketed tothe fast action graphite market.