The Yo-Zuri Pro Carbon EX Fluorocarbon Leader Material gives anglers a clear, abrasion-resistant connection between the main line and lure when stealth and durability matter. Its 100% fluorocarbon construction provides a low-profile leader for bass, walleye, trout, salmon, and inshore species, especially when fishing clear water, rocky structure, docks, weeds, and other abrasive cover. Anglers can pair it with braided or monofilament main line for finesse rigs, jigs, live-bait presentations, casting setups, and trolling applications. Each 30-yard spool provides plenty of material for tying dependable leaders across a wide range of freshwater and saltwater techniques. 100% fluorocarbon leader material Clear finish for low-profile presentations Abrasion resistance around cover and structure 30-yard spool Test (lb.) Diameter (in.) Diameter (mm) 8 0.010 0.253 10 0.011 0.275 12 0.012 0.297 15 0.013 0.331 20 0.015 0.380 25 0.018 0.457 30 0.019 0.488 40 0.024 0.602 50 0.025 0.645 60 0.029 0.747 70 0.031 0.797 80 0.033 0.847 90 0.035 0.900 100 0.038 0.953 130 0.043 1.087