Extreme Iron Technology is what does it

By moving mass away from the center of the club to well-balanced spots around the perimeter, we lowered the center of gravity and expanded the sweet spot. The sweet spot in most irons is somewhere in the center. With Warrior's new irons, the whole surface is the sweet spot, making them feel just as solid as other irons, no matter where you hit the ball. They are the most forgiving clubs you'll ever hit. And to maximize your accuracy, distance, and control, each Warrior custom golf iron is custom made to your exact specifications.