Seaguar - the inventor and world leader in fluorocarbon fishing line, has expanded its product offerings with the launch of two new braids – THREADLOCK and SMACKDOWN and two new fluorocarbon leaders – STS SALMON and STS TROUT / STEELHEAD. Seaguar offers fluorocarbon lines for FRESHWATER and SALTWATER that are virtually invisible – almost invincible. Fish won't know what hit them, and you'll know you can hold them. As the inventor and world leader in fluorocarbon line, they've developed exclusive resins and extrusion technology, making Seaguar Fluorocarbon stronger and more durable than any other fluorocarbon. Seaguar continues to develop and perfect the art of 100% Fluorocarbon Leader, Tippets and Main Line. Their TATSU Fluorocarbon, is recognized as a best in class, tournament quality main line that utilizes our Double Structure Technology - the first and only Double Structure Main Line on the market for ultimate strength, ultimate sensitivity and undefeatable performance.