With the highest wet knot strength available, the Scientific Anglers Freshwater Tapered Leader lets you cast your way confidently through a wide range of fly fishing situations. Made of advanced nylon material, this leader is tough, yet supple and well-behaved; it's designed with a longer, larger butt section than standard leaders, assuring easy turnover on the cast. Sized true to spec for ultimate precision. Highest wet knot strength available Made of advanced nylon material Tough, supple, and well-behaved Longer, larger butt section for easy turnover Sized true to spec