For fishing at medium to long distances with delicate presentations, Scientific Anglers Amplitude Smooth Trout Expert Fly Line stands as one of the world's finest smooth fly lines, with far less surface drag and 8 times the durability of traditional lines. True to its grain weight, Amplitude Expert features the revolutionary AST Plus slickness additive for superior shooting ability; the elongated front taper is designed to enable the most delicate presentations with dry flies and smaller nymphs. Built on a braided multifilament core, with Improved Dry Tip, SA Line ID, and welded loops. If you favor bamboo or glass fly rods, you'll love this line's handling and responsiveness. For general purpose use in cold/medium water temps. One of the world's best-performing smooth fly lines 5X less drag, 8X durability vs. traditional lines AST Plus slickness additive for superior shooting Elongated front taper enhances delicate presentations Braided multifilament core Improved Dry Tip SA Line ID and welded loops