Umpqua's Phantom X Fluorocarbon Tippet - Simply put, UmpquaA*s Phantom X is the strongest and most invisible fluorocarbon tippet on the market. And with very little stretch, Phantom X allows you to detect the most subtle takes. A unique chemical process of combining Fluorocarbon (FC) monomers into polymer chains results in abrasion resistance, sensitivity, density, invisibility and strength never seen before in FC tippet.