Constructed out of 100% Japanese Fluoro Carbon, the Jigging Master Fluorocarbon lines cuts no corner and its line is the best leader line money can buy. There is a reason why Jigging Master fluorocarbon leader lines are 10~15% smaller in diameter compared to other leading brands with the same pound test rating. (JM 62 lb = 0.64mm / Seaguar 60 lb = 0.74mm / Yo-Zuri 60 lb = 0.78). The smaller diameter allows bait presentation to be natural, better knot strength, lower visibility, and ultimately yields more action! Low quality fluorocarbon lines can snap easily especially during cold temperatures, and is unreliable after a short period of time. The Jigging Master team constructed the Super Monster series fluorocarbon line by working directly with the #1 fluorocarbon line manufacturer in Japan to ensure zero excuses for failure. Don't cost yourself your next trophy fish! Jigging Master works with the best of the best to bring you the best of the best when it comes to fluorocarbon leader lines!