The Diamond Yard Line Trolling Series 16X Hollow Core Braided Line is built on proven Generation 3 technology and will never leave you second guessing your spread or depth. A multi color line that changes between blue & white in 50 ft. intervals. Hollow-core Braid is used in some of the most demanding fisheries in salt water. Higher-grade materials strengthened with state-of-the-art braiding techniques are perfect for your fishing needs.