The XXIO 9 Series driver features a low-density 8-2 titanium construction and enhanced Dual Speed Technology, which maximizes the efficiency of a golfers swing. The improved DST provides a significant boost in efficiency during the first part of the downswing. This added performance feature coupled with a heavier club head and lighter shaft produces increase lag and tremendous distance gains. The XXIO 9 Series is designed to promote the perfect balance of club head speed and lag for increased energy and velocity at impact. This design improvement to the club creates a higher balance point moving the CG closer to the grip and brings the club head in tighter to the body of the golfer for a more efficient swing. This improvement generates more centrifugal force (rotational speed) for increased head speed and greater distance. The XXIO 9 Series boosts an expanded sweet spot and deeper CG location for increased performance with more distance and control in every swing.