These clubs update the original JMAX Iron-Woods and compared to the originals the Gold clubs have heavier soles and smaller toplines. The JMAX Gold Iron-Woods have an oversized, hollow-body, hypersteel construction, with thinner walls compared to the original JMAX Iron-Woods.
The wide soles on the JMAX Gold clubs weigh in at 125 grams, helping create a very low center of gravity. Combined with stock low-kickpoint shafts, the clubs are designed to help the golfer get the ball airborne - and to do so more successfully than with traditional irons. touredgegolf.com