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Scientific Anglers Mastery Trout Fly Line

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When Trout Fishing Is the Best Fishing

If it's not a trout, it's not worth your time. That's why you need the Scientific Anglers Mastery Trout Fly Line, the best trout fishing line that money can buy. A compound taper makes it easy to drop your fly right where you want it, without scaring off easily-startled fish. Sling dries flies during hatches or smaller nymphs and streamers when you can't get them to rise. Trust in Scientific Anglers' dry-slick technology to provide effortless casts and unbeatable line durability, letting you fish for rainbows, browns, and tigers for seasons on end, without needing a new line.


  • The best fly line for trout-hunters across the globe
  • Dry-slick technology offers continual line slickness for farther casts and a longer lifespan
  • Compound taper offers delicate presentations
  • Ideal for dry flies, small nymphs, and streamers
  • Braided, multi-filament core fishes well in moderate and cold climates
  • Welded loops offer easy leader attachment


  • Best Use: Fly Fishing, Trout Fishing
  • Grain Weight: [WF-4] - 120g; [WF-5] - 140g; [WF-6] - 160g
  • Head Length: [WF-4] - 66'; [WF-5] - 68'; [WF-6] - 70'
  • Length: 90'
  • Line Type: Floating