The Jackall 21 Bin-Bin Stick Extro Rod series, a Japan Domestic Model, is engineered for specialized Tai Rubber (Tairaba) fishing techniques, offering a blend of suppleness and robust lifting power. These rods feature an innovative EXTRO structure where a carbon sheet is integrally molded around a carbon solid blank, enhancing rigidity while maintaining the characteristic flexibility of solid blanks. This construction allows for a flexible tip and belly that encourages fish to bite without discomfort, paired with a strong butt section for powerful fighting, making them suitable for various Tairaba methods including vertical, casting, deep Dotera, and the Spin Dotera method. Each model boasts Fuji SiC-S/stainless steel frame guides for strength and quality, along with a marking tip to visualize subtle bites and grip joint for convenient storage and transport.