Scientific Anglers Frequency Boost Fly Line - Let’s be honest. No one will ever turn down a little extra help with their cast. Luckily, the Frequency Boost, built a half-size heavy, provides just that. This general purpose floating fly line loads quickly, turns over large dries, nymph rigs, and streamers with ease, and features a mid-length head perfect for nearly all freshwater applications. Excellent general-purpose line Half-size heavy and more powerful than the Trout taper Better with larger, heavier flies Supple and easy to use Versatile mid-length head Braided multifilament core