RIO’s bonefish/saltwater fluoroflex leaders are made of 100% fluorocarbon, and are the perfect solution when fishing shallow, clear flats and for spooky bones, permit, reds, and striped bass. Each leader has high abrasion resistance and excellent tensile and knot strength and a long butt section that will turn over flies effortlessly.Each leader is 9ft long and available from 8lb (0.009″) to 20lb (0.015″).