GRX Bass Spinning Combo (Variants)Available in a variety of technique specific finesse model combinations, the St. Croix GXR Bass Spinning Combo is the result of an epic collaboration between St. Croix and Seviin to create a high performance finesse combo. Built around a lightweight and sensitive carbon fiber SCII blank, each rod is cured using St. Croixs Fortified Resin System to ensure long lasting performance by preventing micro buckling and keeping the fibers in proper alignment.