·   515GRT stands for Graduated Roll Technology, a totally new and innovative face radius design from TWGT.

·   The 515GRT Beta Titanium Drivers represent a completely new, innovative face Roll radius design to deliver a much more consistent trajectory for shots that are hit vertically off center. All other drivers are designed with a 12" to 14" vertical radius up and down on the surface of the face, called Vertical Roll. As driver size has increased, face height has become much taller. On drivers of >350cc size, the conventional Roll combined with the taller face means the loft at the bottom of the face is as much as 3-4 degrees LESS than the real loft of the driver. And the loft at the top of the face is 3-4 degrees MORE than the real loft of the driver.

·   For golfers who occasionally-to-frequently hit the ball above or below the center of the face, this wide range in loft can mean shots hit low on the face fly much lower and lose carry distance. And shots hit high on the face fly much higher and also result in a loss of distance. The 515GRT variable Roll face design delivers the SAME launch angle for shots hit low on the face as in the center of the face. And the 515GRT face design means a better launch angle for shots hit above the face center.

·   515GRT 9.5 loft driver is designed for golfers who already hit the ball high enough from their typical swing movements, as well as for golfers who wish to hit the ball with a driving, penetrating trajectory. The 360cc size of the 9.5 driver is designed for adequate horizontal off-center shot forgiveness for this slightly-better-than-average to skilled player who typically does not require a higher loft or larger head size.

·   515GRT 11 degree driver is for most average golfers who hit the ball on a medium-to-lower trajectory and need a higher launch angle to maximize carry distance. The 395cc size is designed to offer greater horizontal off-center shot forgiveness for the average ability player.

·   515GRT faces are forged in a 'wrap-around' face construction to keep all welding off the back of the face and maximize face deflection for the highest COR/spring face rating allowed under the USGA Rules of Golf. For precision, the faces are CNC machined both on the back as well as the front. TWGT computer modeled variable thickness has been proven to maximize ball speed from off-center hits for greater distance. 515 Driver face material is 10-2-3 Beta Titanium, an ideal alloy for strength + elastic modulus.

·   515GRT Driver head shape is designed in a truly classic player's profile shape, available in 360cc (9.5 loft) and 395cc (11 loft)

·   The 515GRT drivers are finished in a striking midnight navy blue see-thru finish, with satin polish on the exposed titanium surfaces.