Scientific Anglers Frequency Sink Tip Fly Line is for use in both fresh- or saltwater. This weight-forward line is ideal for streamers and wet flies for trout, salmon, steelhead, and smallmouth bass in moving water. Its fast-sinking 10' tip sinks flies through the water column. A mid-length head enhances control. Features include a braided multifilament core and welded loop. Formulated with Advanced Shooting Technology for slickness and longer casts. For use in fresh- and saltwater Ideal for streamers and wet flies in moving water Mid-length head 10' fast-sinking tip Braided multifilament core Welded loop for fast, secure connections Sink rate: 2.5-4.0 ips