Helios 3D 7-Weight, 10-Foot Fly Rods are designed for exceptional accuracy but with enhanced power. They are the most accurate fly rods ever built, but offer remarkable strength and the ability to place a fly where you want it at distance. The Helios 3D 107-4 is designed to handle heavy trout, bass, light steelhead, and saltwater. It has the power to handle large streamers, bass bugs, heavy nymphing rigs and is excellent for UK stillwaters. No cast ever thrown is identical to any other cast ever thrown. The variables of caster, rod, and conditions are too great. Helios 3D was designed to significantly reduce the variables at the point of release, focusing the energy of the cast to the intended target. No matter what happens behind you, the energy of the forward cast is crisply released through a tight window created by the most significant reduction in horizontal and vertical tip frequency ever conceived. It is a rifle in a world of muskets and it autocorrects the variables of the cast to the target with incomparable precision