Scientific Anglers Mastery Standard Fly Line SF21 All models feature an intermediate

All models feature an intermediate running line to help you stay down when retrieving

That’s why Echo is including a premium Airflo weight-forward floating fly line loaded on to the battle-tested ECHO ION Reel

Shooting Texture reduces friction

Designed with HR 70+ anvil tungsten carbide side cutters

Scientific Anglers Mastery Standard Fly Line SF21 All models feature an intermediateAFFTA STANDARD WEIGHT, MID LENGTH HEAD Mastery Standard is a true to AFFTA line weight casters fly line. Built with a mid length head for exceptional mending and accuracy at long distances. If you love casting this will quickly become one of your new favorites. True to line weight Mid length head for exceptional mending and accuracy at distance The casters fishing line Braided multifilament core For use in moderate and cold climates SA MASTERY