Diablo Octane Driver RH 11.5 Ladies Forged Composite is a new material used in the crown thats lighter stronger than titanium. Lighter clubhead enables a longer club configuration for faster head speed and ball speed for an average of 8 extra yards over Diablo Edge Hyperbolic Face Technology precisely controls thickness of the face for consistently high balls speeds for longer distance. Project X Shaft is the ideal complement to maximize performance and feel