PURE FLURO: 100 % fluorocarbon leader material •LARGE SPOOL: 50mm spools allows for more leaders than most spools •FISH CAN’T SEE IT: Helps get more bites in clear water while drifting lures like a Trout Magnet •FLY OR SPIN: Great for fly fishing or spin fishing small lures or baits •The Trout Magnet Phantom is pure 100% fluorocarbon leader material that the fish can’t see! That means it helps get more bites in clear water while drifting lures like the Trout Magnet. In addition, this Phantom leader is great for both fly fishing and spin fishing small lures or baits. The large 50mm spool lasts longer and allows for more leaders compared to other spools on the market.