For most of us, landing a tuna on a fly rod sounds like pure lunacy. For others, it's just another day on the boat. Thankfully, the Mastery Bluewater Express is there to handle even the strongest creatures Poseidon can muster. Built on a 65-lb. core, the super-fast sinking head probes the azure depths, completely ready for what's to come. Be prepared. Your line will be.