The Cascade silver Turbo Disc. This is the cone that uses simple physic laws to make your fly swim better than anything you have ever seen. The cone divides the water and creates turbulence that will make your fly move and look alive. The fly creates its own little turbulent stream where the materials in the fly can move even in the slowest or strongest current. If you believe in a moving lively fly this must be your choice. Remember the fly is all the fish is supposed to see!