Callaway Big Bertha Diablo Fairway Wood (Neutral) 100 percent stainless steel for explosive power and distance with a wicked new attitude Draw and neutral head shapes-provides golfers with the opportunity to select a club VFT Technology-The varying levels of face thickness are designed specifically to maximize performance Edge Technology-The unique shaping of the all-stainless steel clubheads allowed the engineers S2H2 design-increases discretionary weight by removing it from the hosel That will most benefit their swing type and promote their desired shot shape And repositioning it in the perimeter of the clubhead to add stability To place weight in specific locations to achieve the optimal center of gravity Resulting in higher ball speed from a larger area of the face to increase distance