YOU DON'T HAVE TO ADJUST TO HIT IT FARTHER Caldera Titanium Drivers inspire confidence and push the legal limits of performance to give you a competitive distance advantage. These hot 440cc club heads are forged of four separate ultra thin wall Beta Titanium parts (face, crown, skirt, and sole). These are welded together using a special Beta Ti hosel tube to create the head. Caldera Drivers feature an over-sized "Hot COR* Sweet Spot" to maximize ball launch conditions and initial velocity across a larger area of the club face. This means that even when you hit the ball less than perfectly, the face compression acts better on the ball to improve shot results. They are hot! Caldera's are offered standard with the exclusive Aldila V-Tech Series 65 graphite shaft. They are also fitted with a wide selection of the world's finest exotic graphite shaft upgrades as shown below. * "COR" (Coefficient Of Restitution) is the measure of club face rebound or "trampoline effect". Caldera Z440 Titanium Drivers yield the highest allowable COR of any driver in the indrustry. The oversized Caldera Z440 head is designed for improved stability on toe impact shots. It deflects less outwardly (toward the toe) than competitors heads producing straighter ball flight with less overall yardage loss. This results in improved distance and accuracy. Smaller heads ... even oversized are less stable ... especially those at 400cc or less torque out (twist) to a greater degree off line resulting in shorter, more errant shots. The Caldera Z440 features extreme perimeter weighting, a face made from ultra strong resilient Beta Titanium, a larger overall head size, a high Moment of Inertia, and optimum roll and bulge radiuses to enhance launch conditions and "gear effect" spin. The result of this combination of club head properties is to maintain stability at impact allowing for greater distance even for off center hits. In fact, tests prove Caldera heads are up to 20% better on distance loss (with off center hits) than competitive models ranging in size from 400cc to 460cc. Caldera heads are up to 30% more effective in controlling distance loss as compared to heads under 400cc. The face of the Caldera Z440 head is forged of a very thin high strength Beta Titanium alloy that possesses an exceptionally high strength to weight ratio. This creates an explosive impact area that rebounds the ball at the highest legal limit the USGA allows. No driver is longer