Scientific Anglers Freshwater Tippet (30M), For years, our tippet materials were marketed as being something they weren’t. The diameters, breaking strengths, and performance just weren’t accurate—or up to par with our own rigorous standards. Our Freshwater nylon tippet is, simply put, the strongest and most reliable we have ever created, with the highest knot strength of anything we tested. Period. You can fish the other stuff, or you can Fish the Truth.