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Cleveland's CG4 Irons Bring 'CMM' Technology to Game-Improvement Set

By Brent Kelley, About.com

Cleveland CG4 Irons

The CG4 Irons are Cleveland's first game-improvement set using their proprietary CMM metal.

Cleveland Golf
Apr 25 2005

Cleveland Golf's highly regarded CG10 wedges, as well as the company's CG1 and CG2 irons, are made from a proprietary light-density metal that Cleveland calls CMM. That stands for Carbon Matrix Material. The metal contains carbon spheres suspended within the metal, creating a matrix that results in a metal 10-percent less dense and 15-percent softer than traditional carbon steel used in cast and forged clubheads, according to the company.

CG10 wedges and the two iron sets using CMM fall into the players clubs category; clubs designed for better players.

Now, for the first time, Cleveland is using CMM technology on clubs made for the rest of us - the game-improvement CG4 irons. "These new CG4 irons will now give players of all abilities the same opportunity to enjoy the benefits experienced by our tour staff," said Greg Hopkins, president and CEO of Cleveland Golf.

The newly introduced Cleveland CG4 irons are designed with a low and deep center of gravity and a high moment of inertia, both qualities that help mid- and high handicappers achieve a better launch and more control. Qualities of the CMM metal also provide greater shock absorption at impact.

Other game-improvement features on the Cleveland CG4 irons include a wider sole for stability through impact. And, of course, the CG4 irons make use of a cavityback design.

The Cleveland CG4 irons carry an MSRP at launch of $864 with steel shafts and $1,000 with graphite shafts. Sets will begin shipping on June 1, 2005.

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