A breakthrough design in controlling dynamic spine promotes better arrow flight and improved broadhead accuracy. Different stiffness and weight properties over the length of the shaft work together to contain the flexing of the arrow to the "Red Zone". Features a straightness tolerance of +- .0025". Available in sizes 250 (.410" spine, 8.3 GPI) and 350 (.341" spine, 9.0 GPI). Includes LaunchPad precision nocks, inserts, and BullDog collars. All sizes use 19/64" points. Fletched with 2” Blazer vanes.