Rio's bass leaders are designed and built to match the needs of the bass fly Fisher. The leaders are made of a medium stiff nylon and have a powerful taper design that will easily turn over large flies, and cope with tough winds. About the manufacturer: far bank is an integrated manufacturer and distributor of fly fishing products, including fishing rods, fly reels, fly lines, leaders, tippets and performance outdoor apparel. Search Amazon for a complete list of Redington, rio, and Sage products to outfit your favorite fly Fisher.