Berkley® Big Game?100% Fluorocarbon Leader MaterialBerkley ProSpec is a Professional Grade, 100% Fluorocarbon leader material. Specified and approved by Professional Captains and Guides. Available in clear and in special tints to match different water conditionsPROFESSIONAL GRADE 100% FLUOROCARBON LEADERS SPECIFIED BY THE PROSNear invisibilityHigh Abrasion resistanceStrengthDependabilityEasy to tie on mainline