Mizuno's new AX4 technology, 4 axis of materials for massive sweet spot, Mizuno's new Black Onyx for improved durability and feel, redesigned coiled end cap for lower swing weight, Mizuno's new Digi-Grip wrap improved durability, redesigned smaller knob for better feel, balanced design for maximum swing speed, 14 inch barrel for a more balanced feel. All association legal including ASA.
2008 ASA bat certification change