Magic-Sink is our exclusive formula for sinking lines and leaders without split shot. Although it can't do the job of split shot in heavy currents, it can - and will - end the frustration of a wet fly that lies on the surface or hangs suspended just under the surface. And it won't interfere with your casts or the action of your fly as lead does. Our Magic-Sink is as good at sinking flies as Dilly Wax is at floating them. One application makes your wet flies and leaders sink the instant they hit the water -just like magic! Magic-Sink comes in a small plastic bottle with a closable dispenser spout - one-hand use and no top to drop.