Sea & deep sea anglers require a special leader material in thick diameters. The Energy Sea Leader monofilament is specifically designed with them in mind. The glass-clear finish minimises suspicion from those wary fish. This Listing is for a 50 metre spool of 130lb line.. Stored on a spool the high diameter leader barely kinks at all. Its stretch properties also offer the sought after absorption effect in the rig either on the cast or while playing the fish. The glass-clear finish minimises suspicion from those wary fish.