About this item Rogue ST MAX are Callaway’s longest iron ever, with refined game-improvement shaping for golfers who want incredible speed, forgiveness, and all-around iron performance. For the first time in the industry, they’ve combined high strength 450 steel with our A.I. designed Flash Face Cup. This delivers more ball speed and better ball speed consistency. They’ve applied our new A.I. Face Optimization for Rogue ST MAX. It’s unique for each model and loft to create spin rate consistency across the face. It creates high launch and COR plus a more controlled landing angle to help hold greens. New precision tungsten weighting features up to 62g of high-density tungsten, a 260% increase over MAVRIK. This provides improved launch conditions and maximizes speed across the face. Their patented urethane microspheres are now pushed further up the face in Rogue ST irons (up to the 6th groove) to enhance sound and deliver pure feel while maintaining fast ball speeds.