Sea Striker Billfisher Leader Coils are formulated from a special polymer that is extremely strong for its diameter, has excellent resiliency and has superior abrasion resistance. All the properties you want in a Big Game leader material. Hard outer shell and soft inner core that remains flexible. Bill Fisher monofilament fishing leader can be used for rigging lures or live baiting. Makes an excellent leader for Marlin, Tuna and Grouper. Available in 80 to 400 pound test. Clear, 100 yard coil