Fourteen Iron Set TB-7 Forged #5P - Iron Set Golf ClubTHE NEW THEATER BLADE DESIGN The NEW THEATER BLADE DESIGN removes the cavity step in the back face allowing the thickness to flow naturally in the curved shape of a theater. This creates an optimal CG (center of gravity) and a reduction in vibrations transmitted to the hands. The soft feel is further enhanced by the use of the soft material S20C mild steel. The results are an optimally balanced iron featuring both best in class feel and forgiveness.