Scientific Anglers Mastery Infinity Fly Line

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The Mastery Infinity has the power to bomb out streamers, yet retains delicacy for dry flies. It mends like an absolute dream, and delivers flies at all distances.

Built a half-size heavy, with a long head and substantial front taper, it’s perfect for everything from trout and panfish to pike and steelhead. There’s a reason we call it the Infinity: there is no end to what you’ll be able to do with it.

  • Extremely versatile general-purpose taper designed for most freshwater species; an excellent line for trout, grayling, panfish, bass, carp, steelhead, salmon, and pike
  • Made a half-size heavy to load fast-action rods, but works well with a variety of rod actions
  • Extended head length for long-distance casts and superior mending ability
  • Excellent for dry flies, nymphs, and streamers
  • For use in moderate and cold climates
  • Braided multifilament core
  • SA MS INFNTY WF X F (X = line weight)


WF-3-F 47.0’ 90.0’ 110
WF-4-F 48.0’ 90.0’ 130
WF-5-F 49.0’ 90.0’ 150
WF-6-F 50.0’ 90.0’ 175
WF-7-F 51.0’ 90.0’ 200
WF-8-F 52.0’ 90.0’ 225