Cobra Amp Combo Irons (Men's Right-Handed, 3H, 4H, 5-PW) Advanced Material Placement: Multi-alloy design strategically positions weight to provide explosive long irons and consistent short irons. Full cavity TPU layer dampens vibration and provides exceptional feel. E9 Face Technology: features a progressive face and cavity design optimizing distance, feel and forgiveness in each individual iron. New V-Skid Sole Design: Promotes consistent distance and accuracy with a versatile mid-width sole that narrows in the toe and heel. Adjustable Flight Technology: Three simple face-angle settings (Open, Neutral and Closed) optimize ball flight for increased distance and improved accuracy. Deeper, high strength steel face: promotes long, penetrating ball flight.