Callaway Big Bertha Diablo Fairway Wood (Draw) 100% 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 that will most benefit their swing type and promote their desired shot shape. VFT Technology-The varying levels of face thickness are designed specifically to maximize performance, resulting in higher ball speed from a larger area of the face to increase distance. Edge Technology-The unique shaping of the all-stainless steel clubheads allowed the engineers to place weight in specific locations to achieve the optimal center of gravity S2H2 Design-Increases discretionary weight by removing it from the hosel and repositioning it in the perimeter of the clubhead to add stability.