J-Thread Spartan NY was developed over 2 years in collaboration with Daiwa Australia & Daiwa Japan. Daiwa engineers and anglers in both countries set out to create the toughest nylon material on the Australian market. The result? Daiwa J-Thread Spartan NY. A name synonymous with offshore fishing, Spartan NY is incredibly tough and abrasion-resistant. The perfect leader for heavy saltwater fishing such as jigging, popping, and live-bait fishing.