Ping G30 Irons Set 4-PW+UW Black (Steel CFS DISTANCE, STIFF) Golf Ping G30 With distance also come forgiveness and accuracy. Slightly longer blade lengths help to increase MOI, most noticeably in the 4 through 7 iron. Progressive offset generates higher ball flights in the longer irons and penetrating, controlled trajectories with the scoring clubs. Another advantage is a sole design optimized to promote solid contact with consistent trajectories. To improve turf interaction, relief was added to the lead and trailing edges, and bounce was refined to perform with any angle of attack. A soft elastomer badge further contributes to improved feel and sound in the perimeter-weighted design.