These irons provide a golfer with considerably greater distance – with seemingly less effort – along with higher trajectory and increased backspin. They impart more positive head feel throughout the swing and better control of the ball at impact for greater confidence and more enjoyment. The "Short, Straight, Hollow Hosel" (S2H2) is a breakthrough Callaway Golf design that shortened the tradition hosel length, allowing weight to be moved lower and to the more useful perimeter area of the clubhead. The hollowed-out or Tru-Bore Technology is part of the S2H2 design and allows the shaft tip to extend through the clubhead to the sole, which improves feel and control.