Scientific Anglers Sonar Titan Triple Density I/S2/S3 Fly LineThis is a fully tapered sinking line, so it casts like a floater, but provides a straight line sinking connection to your streamer. The days of chucking and ducking are finally over. Welcome to the triple density revolution. Two line sizes heavy for loading quickly and delivering the biggest flies to the furthest targets; use designated line weight for your rod Excellent turnover due to short, powerful head Triple density construction provides