Opsin Fluorocarbon Fishing Line – 40 lb (0.55 mm)

Opsin 40-lb fluorocarbon leader is 12% lower in diameter than leading competitors while delivering championship-grade performance for bluefin tuna, yellowfin, and trophy dorado. Slow-extruded in Japan using advanced manufacturing that takes 42% longer at lower temperatures, creating molecular-level precision that ensures consistent diameter and superior knot integrity.Key Performance Features: Low-visibility fluorocarbon for pressured offshore fish Superior abrasion resistance survives aggressive runs Enhanced knot strength handles trophy-class fish Reduced stretch provides instant hook-set power Magnetic-lock spool keeps the line tight between trips Tournament-level performance for serious offshore anglers. When failure isn't an option, Opsin delivers championship reliability.