Cleveland CG2 Irons - Graphite Shaft

What makes the CG2 better? Simply put, Cleveland developed a material that damps vibration in an unprecedented fashion and can be readily manipulated and engineered for performance. Its called Carbon Metal Matrix (CMM). This new material, while not a composite, is infused with 17 times more carbon than traditional 8620 and 1020 carbon steels. Using a process unique to CMM, the carbon is infused into microscopic spheres suspended within the molecular structure - creating a matrix that is 10% less dense and 15% softer than traditional carbon steel. These density relieving spheres within CMM dramatically damp vibration, offering a pure, soft feel never before achieved in any golf club. Measuring 77 on the Rockwell B hardness scale, CMM is the softest feeling material ever used in a golf club head. Needless to say, Cleveland Golf has a patent pending for the exclusive use of this breakthrough material.