The Sufix Advance Fluorocarbon Leader Material gives anglers a strong, low-visibility connection for bass, walleye, trout, salmon, steelhead, and inshore species when clear water or abrasive cover calls for a dependable leader. Its fluorocarbon construction remains virtually invisible underwater while providing strong shock absorption, knot strength, and abrasion resistance around rocks, wood, vegetation, and structure. G2 Precision Winding reduces memory so lures, jigs, and live bait rigs can move more naturally, while Sufix Proprietary Gel Phase Technology supports performance, clarity, and UV protection for demanding freshwater and saltwater presentations. 25 yds. Strong shock absorption and knot strength Virtually invisible underwater for low-visibility presentations Superior abrasion resistance around cover and structure G2 Precision Winding and Gel Phase Technology improve handling, clarity, and UV protection Test (lb.) Diameter (in.) Diameter (mm) 4 0.007 0.18 6 0.008 0.21 8 0.009 0.25 10 0.011 0.28 12 0.012 0.30 14 0.013 TBD 17 0.015 0.38 20 0.017 0.43 25 0.018 0.45 30 0.020 0.50 40 0.025 0.65 50 0.027 TBD 60 0.031 TBD 80 0.036 TBD 100 0.041 1.04