Callaway's 2009 X-Forged irons were built by taking feedback from Tour pros. The result: great clubs that give skilled players control over their shot. Forged from soft carbon steel, the clubhead has a Tour-inspired shape that has a thinner topline, narrow sole and shorter blade for improved workability. The Center of Gravity placement produces strong trajectories and distance control while the Progressive Dual Notch Weighting allows weight to be precisely positioned for optimized performance for each individual iron within the set.