The Scientific Anglers Wetcel Type IV Sink Tip Fly Line is a simple, no-frills, weight-forward fly line perfect for throwing nymphs and streamers to trout, bass, or panfish in streams, rivers, or lakes. This line features a mid-length head for general fishing situations. Scientific Anglers Wetcel Type IV Sink Tip Fly Line Features: 12 ft long, sink 4 sinking tip Braided multifilament core for moderate to cold climates Mid-length head for general fishing situations