The Callaway X2 Hot Pro driver is designed with the same technology as its standard counterpart, making it long and forgiving off the tee. In addition to the thinner and lighter all-titanium Hyper Speed Face, the Pro version gives you a deeper face and the ability to work the ball effectively with a more compact head at 440 cc. The Center of Gravity is 37 percent lower than the standard model, leading to lower spin trajectories than previous drivers of this size from Callaway, including the FT OptiForce 440 that was popular on the PGA Tour.