Titleist has been busy engineering and designing the very latest boundary-breaking TSi 3 Driver. Made from never used before materials in the golfing world! The new ATI 425 Aerospace titanium face technology is the first of its kind to be used in the golfing environment, producing blistering speed that is not just a tweak to golfing technology but a significant leap forward. The breakthrough face material and player-tuned aerodynamics propel the driver through the air as efficiently as is possible in today\'s world. High inertia properties produce an extremely stable clubhead, giving players more consistent speed and spin across the entire face for straight and long drives.