Callaway X 460 driver. New for 2006, the Callaway X460 drivers are the largest allowable under the Rules of Golf. Callaway's patented Variable Face Thickness (VFT) Technology takes ball speed to the edge of the legal limit. The X460's titanium face is robotically plasma-welded to the body using a precision manufacturing process which ensures face thickness is controlled to tight tolerances for robust performance over a larger face area. The "Consistent Alignment Sole." has been designed so that, at address, the subtle keels of the soleplate rest on the turf for ease in aiming the club face and stabilizing the club head. The unique configuration of the X460's larger face area - more than 10 percent larger than the Big Bertha Titanium 454 driver - allowed Callaway engineers to move even more weight to resist twisting from heel to toe and from sole to crown. This delivers a more consistent trajectory and more accuracy off the tee. The Callaway X460 driver is available in lofts of 9 degrees, 10 degrees, 11 degrees, and HT (High Trajectory) and comes standard with a Fujikura(R) 64-gram graphite shaft in Light, Regular and Stiff flexes. The X460 Tour version comes in 8.5-degree, 9.5-degree and 10.5-degree lofts with a Fujikura Tour Platform 26.3 shaft in Regular, Stiff and Extra Stiff flexes. Left-handed versions of the X460 driver are available in the 9-degree and 10-degree lofts. The left-handed X460 Tour driver is available in the 8.5-degree and 9.5-degree lofts. Tour versions of the X460 driver come in half-degree lofts to distinguish them from the standard models. In addition to a square face, the X460 Tour driver features a slightly modified centre of gravity position to produce trajectories generally preferred by better players.