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Scientific Anglers Sonar Sink 25 Cold Fly Line


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  • White/Charcoal, 250gr 6-8wt
  • Green / Charcoal, 300gr 7-9wt
  • Orange / Charcoal, 350gr 8-10wt

Sonar Sink 25 Cold Fly Line

When that big meat-eating brown refuses to go after your fly, take your fly to him with the Scientific Anglers Sonar Sink 25 Cold Fly Line. This sink tip line has a fast-sinking 25-foot head that puts your streamer down fast, so even the most selective fish will have a hard time refusing such an easy meal.

  • 25-foot fast sinking head
  • Floating running line
  • Shooting Technology Plus
  • Braided multifilament core
  • Welded loops
  • Scientific Anglers Line Identification markings
  • Item #SAS001M

braided multifilament core
Overall Length
105 ft
Fly Line Weight
[4-6 wt] 150 grains, [5-7 wt] 200 grains, [6-8 wt] 250 grains, [7-9 wt] 300 grains, [8-10 wt] 350 grains
Fly Line Type
sink tip
Sink Rate
4 - 8 ips
Front End Loop
Back End Loop
Recommended Use
fly fishing

Tech Specs

What do you think about this product?


>Rating: 4

sinks like a brick

I've used it several times

First SA line I have used and I am really happy with it so far. It sinks super quick, picks up well, and casts like a rocket. I would recommend it to anyone wanting to get a streamer down quick. Make sure and pair it with a fast action rod to aid with picking up the line off the water!

>Rating: 3

Cracked on 1st use

I've used it several times

This is the 2nd Scientific Anglers line that has cracked on me the first time. I still gave it 3 stars because it's a decent fly line, casts easily and it gets my streamer patterns down in the water fast!