Tour Proven Created by Callaway Chief Designer Roger Cleveland these forged muscle back irons are designed specifically to meet the demands of the most highly skilled players. With Tourinspired styling and soft carbon steel construction these irons provide precision shotmaking with incredible feedback and workability. Tour Grooves have been added to give golfers the confidence and performance for aggressive shotmaking. The Flighted CG design and RAZR Muscleback generate consistent Tourlevel trajectories with unparalleled playability in a forged blade. Forged 1020 Carbon Steel Provides unmatched feel and performance giving elitelevel golfers incredibly soft responsive feedback at impact. Tour Grooves The highest performing grooves which are only achievable in forged clubs. By tightly spacing up to 30 more conforming grooves the irons generate increased spin for aggressive shotmaking. TourInspired Styling A white chrome finish delivers the aesthetics Tour players prefer. In addition the very thin topline narrow sole and short blade length allow for precise workability. Flighted CG Design Produces the optimal trajectories ball flight and distance control Tour players demand and provides seamless performance progression through the entire set. RAZR Muscleback Design Provides consistent trajectories and maximizes playability.