Mares Spear Fishing Line - Dagger Mares Spear Fishing Line Mares Spear Fishing Line: Specifically-Designed for Spear-Fishing Special High Resistance Spear Gun Line Mares Diamond Lines:Made of 100% Dyneema with Woven HT Polyester CoveringDyneema: Ultra High Molecular Weight Polyethylene Fiber15-Times Stronger than Steel WireLightweight at 7-Times Lighter than Steel WireFloats in Water