The Callaway Big Bertha Fusion FT-3 Tour Driver is a 460-cc multi-material breakthrough driver designed to deliver the ultimate in high performance. The FT-3 Tour Driver combines Callaway Golf's patented internal weight-shifting technology with a precision-tuned face to deliver the new science of distance with accuracy ' explosiveness and forgiveness unlike anything you have experienced in a driver. Fusion Technology is all about the marriage of two distinctly different materials in the clubhead: an ultra-hot titanium cup face and a superlight carbon composite body. The body of the clubhead is so light, it frees up 44 grams of discretionary weight ' nearly a quarter of the weight of the entire clubhead ' which is distributed inside various parts of the head to benefit golfers' unique swing types and ball flights. The titanium cup face, with patented Variable Face Thickness (VFT) Technology, has a much larger effective hitting area for greater distance on off-centre shots. And because it is tuned to comply with maximum USGA limits on Characteristic Time, the face of the FT-3 Tour Driver generates greater ball speed for increased distance. All the discretionary weight in the FT-3 ' far more than any competitor's driver ' gave Callaway Golf club engineers the latitude to precisely position it to maximize stability and generate corrective-spin characteristics. This is as important to amateurs of all levels as it is to top-tier pros. And now with Callaway Golf's OptiFit Fitting System developed in conjunction with the FT-3 Driver, golfers can customize their driver simply by choosing the setup that best fits their individual swing type. No fiddling with wrenches, screws or gadgets. They can choose from three Centre of Gravity (CG) choices: Neutral for maximum workability; Draw for reducing a slice or fade and promoting a draw; or Fade for reducing a hook and promoting a fade or straight ball. The FT-3 Tour Drivers' 460cc clubhead is the largest allowable head volume under the Rules of Golf. It serves to increase Moment of Inertia (MOI) for extreme forgiveness on off-centre hits and exceptionally consistent ball speed up, down and across the face. The Tour version comes in half-degree lofts to distinguish it from the standard version. The face angle is slightly more open than the standard lofts, and the shaft, an Aldila NVS 65, is available in regular and stiff flexes that complement the swing speeds and styles of more accomplished players.