RIO's Fluoroflex steelhead/salmon leaders are made of 100% fluorocarbon, and are the perfect solution for when a nearly invisible presentation is required in low, clear rivers and for spooky summer-run fish. Each leader has high abrasion resistance, excellent tensile and knot strength and a long butt section that will turn over flies effortlessly. The leaders are 9ft in length and range from 8lb (0.009") to 20lb (0.015") in size.