Diamond Fishing Products Diamond Generation 3 Hollow Core Braided Fishing Line - Introducing the next leap in High Performance Fishing Line. Diamond Fishing Products shifts hollow-core braid manufacturing into high gear – Diamond Braid Generation 3. 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 give Diamond Fishing Products’ Generation 3 Braid a unique combination of fishing characteristics. Designed for the most demanding technical fishing Easiest splicing braided fishing line in existence Fine diameters attuned to maximum reel capacities Stays round under tension and while splicing Color Locked for permanent retention