The XXIO is an oversized iron to improve performance for golfers of all abilities.They feature a deep cavity with undercut technology, incorporating a thin and light titanium face set in a cast stainless steel body. XXI0 irons deliver great forgiveness, superb distance and ideal trajectory. These very forgiving irons will enhance the game for golfers of varying skill levels. Modifying the shape of the “tour back cavity” from the long irons through the short irons determines the distance from CG to shaft line optimally through the set. This CG placement also provides ideal sweet spot for accomplished players. The long irons are easier to square and the short irons have the ideal trajectory.