RIO Products Bass Leaders 9Ft 10Lb 4.5Kg. These 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. Specifications for RIO Products Bass Leaders: Manufacturer: RIO Products Line Weight: 10 lbs Fly Length: 9 ft Fabric/Material: Nylon Last Chance: Yes Package Contents: RIO Products Bass Leaders RIO Products RIO-24202: Bass Leaders 9Ft 10Lb 4.5Kg