Callaway RAZR Fit Xtreme Driver Optic Fit Technology; Hosel adjusts the face angle to Open, Square or Closed positions to improve accuracy and trajectory, and allows golfers to dial in their preferred look at address Broader Trajectory and Shot Shaping Options; Incorporates a greater range of face angle options, cg bias options and cg height differences than the RAZR Fit Driver; Available in more loft options than RAZR Fit Speed Frame Face Technology; A combination of VFT and Hyperbolic Face Technology creates a larger sweet spot and increases ball speeds across the titanium face for longer, more consistent distance Revolutionary material in the crown that's lighter, stronger than titanium; Allows our engineers to precisely control thickness for improved forgiveness; Composite driver crown ever helps us achieve the lowest CG in any fully adjustable driver Weights (13 grams and 1 gram) shift the club head's center of gravity to promote either Draw or Neutral ball flights