Phantom Fluoro Carbon Leader is a RMFS favorite. Phantom leader line is a main line leader and is more rigid than tippet material. We love using it for streamers and nymphs and it is invisible to fish in our crystal clear mountain water. Not to mention it has an excellent price point for a fluoro carbon line. it comes in six different sizes and smallest size #3.3 can be used to present dry flies or as a "tippet" material fluoro alternative.