Gamakatsu 19305 AL004 Assist Line 480 Fluoro Core 10m Size 15 150lb (8593)Gamakatsu 480 Knot Type Assist Line in 300lb breaking strength. Braided Dyneema core with 10m length. Size 30 (0. 8mm diameter). Designed for heavy duty bottom fishing rigs where abrasion resistance and strength are critical. Pre knoted with 480 style loops every 20cm for quick leader attachment. Use with heavy sinkers and large baits like squid or octopus. TARGET USE: Heavy bottom fishing for large species like cod, halibut, or grouper