Opsin Fluorocarbon Leader – 20 lb (0.37 mm) Length:50 yd 20 mm — clear enough

20 mm — clear enough for pressured fish in open water

and final-connection confidence

avoid over-crimping

the tackle

How should I store it

Opsin Fluorocarbon Leader – 20 lb (0.37 mm) Length:50 yd 20 mm — clear enoughBuilt for kelp bass, rockfish, and medium inshore species when live bait presentation matters and the fish are still line shy. A high leverage weight class where Opsin's diameter story is strongest thinner than every listed competitor at 20 lb test. 20 lb Diameter Comparison Two leaders can both say 20 lb. Fish react to the diameter, edge, and how naturally your bait moves. Opsin 0. 37 mm Baseline Hi Seas 0. 40 mm +8. 1% thicker Seaguar Blue Label 0.