Designed specifically for leader and top shot applications. FC Leader uses Sunline s new E3 raw material that makes the perfect balance of tensile, and knot strength combined with stretch for optimum leader performance. Features Sunline s TRP processing for better abraision resistance and improved knot tying. 100% Fluorocarbon with 1.78 specific gravity and low water absorption for negligible strength loss under water. The perfect leader to match up with Sunline SX1 braid. 50 yd spool Weight; 16lb