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. The copolymer material is incredibly tough and abrasion resistant. Each leader is 9ft long, and offered in 4 sizes from 8lb (0.011") to 16lb (0.015"), and available in a single pack, or a money saving 3-pack.