Scientific Anglers Sonar Tropical Custom Tip Sinking Fly LineScientific Anglers Sonar Tropical Custom Tip Custom Cut Sinking Fly Line for Tropical Climates lets you cut the tip to the ideal weight so it goes and stay deep. Features of the Sonar Tropical Custom Tip: Cut to fit design lets you cut the tip to the ideal weight for your fly rod Goes deep and remains deep Intermediate running line Sink Rate: 7. 75 ips Tropi Core technology for tropical climates Braided add on loop included