In the JPX 923 Tour, Mizuno has added a soft copper underlay between the base Nickel and outer Chrome for even better feel. Plus, a new V-Chassis enables a thinner topline and creates muscle-back type vibrations from a cavity design. A generously rolled leading edge enables versatility and fantastic turf interaction, while the shorter irons have been refined for more control through noticeably shorter blade lengths. The JPX 923 Tour irons fall into the players iron category and best fit better golfers with single-digit handicaps.