Scientific Anglers Frequency Boost WF-5-F 85ft The Scientific Anglers Frequency Boost is a half-size heavy floating line that is great for general purpose applications. This line is better with larger, heavier flies but is supple and easy to use. It has a versatile mid-length head and braided multifiliment core. WF-5-F in Willow Excellent general purpose line Half-size heavy Better with larger, heavier flies Supple and easy to use Welded front loop Braided multifiliment core Manufacturer: Scientific Anglers Model: 117142 SKU: SI_3117142