You don't need the same leader for every rig, so the Rio Powerflex Trout Leader Selection gives you the option to switch between the most popular sized leaders for trout--3wt, 4wt, and 5wt. Each uses the same advanced, copolymer material which delivers strength with flexibility, and they all have the same aggressive taper which combines a long, powerful butt for excellent wind penetration and a soft, flexible tippet section for precise presentation.