Scientific Anglers Sonar Sink 25 Cold Sinking Fly Line - When it comes to fishing streamers in cold water, it's difficult to beat the SONAR Sink 25. Designed with a short 25 fast-sinking head, the Sink 25 sinking fly line gets flies deep extremely quickly and is paired with a large diameter handling section for excellent line control. When it's time to get down and dirty, the Sink 25 has your back. 25' extra-fast sinking head with handling line For coldwater applications An excellent streamer line Low tangle design increases shooting distance Floating running line Super Fast Sink Replaces Mastery Wet Tip Express Braided multifilament core SA ID - SA SONAR SINK 25 ### (### = grain weight)