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Scientific Anglers Fly Fishing Fly Lines, Fly Fishing Outfits, Fly Fishing Reels, and Fly Fishing Accessories are available at Traditional AnglerScientific Anglers Mastery Spey Fly Lines

Scientific Anglers Mastery Spey Floating Fly LineThe Mastery Spey line favors normal, long distance, and roll casting. 

The Mastery Spey lines feature a braided multifilament nylon core with optimum air entrapment for minimum memory and maximum floatation.  It is coated with a specially formulated PVC with built in AST technology offering superior lubrication.

Scientific Anglers Ultra 4 Fly Fishing Fly Lines available at Traditional AnglerMastery lines incorporate Scientific Anglers' Advanced Shooting Technology. The unique 'dry-slick' coating enhances every aspect of floating line performance. In just three short years, amazing AST - Advanced Shooting Technology - has redefined fly-line performance. Using a patented coating process, AST is integrated within the line coating to achieve a unique 'dry' slickness that keeps the line permanently slick and continuously clean. Try an AST line just once, and nothing else will do.

The dry slickness of AST prevents dirt and algae from clinging to line, which means line stays cleaner and floats higher for longer intervals. AST isn't just permanently slick - it's lightning slick for the fastest, smoothest shooting of your life. With AST, line shoots through the guides virtually friction-free and keeps on doing it for the life of the line - without the need for dressing. Plus, because the line stays so clean and free of debris with AST, Scientific Anglers lines are significantly less prone to wear and corrosion.

Mastery Series Spey Floating Fly Lines

  • Scientific Angler Mastery Spey Floating Fly LinesComplex head designs for exceptional spey casting performance

  • Ideal for normal and long-range fishing

  • Designed for fishing with two-handed rods

  • Ideal for salmon, steelhead, and big, wide rivers

  • Two-tone color helps you know when to recast



  • Long 75' head enhances long-distance mending and roll casting and minimizes need to strip and shoot line

  • Extended head and long front taper provide the long-distance line control needed to fish wide rivers

CORE: Braided multifilament nylon with optimum air entrapment for minimum memory, maximum floatation


COATING: Specially formulated 3M PVC with patented AST - Advanced Shooting Technology -designed to stay supple in cool steelhead waters


COLORS: Light Yellow/Mist Green




Price: $69.95




Scientific Anglers Mastery Spey Profile

Copyright 2002, Traditional Angler, LLC. All rights reserved.
Revised: 04/21/07.