Cleveland CG1 Black Pearl Irons. CG1 Black Pearl Irons are the flagship, tour-inspired blades for Cleveland Golf in 2006. Currently played by Vijay Singh, they feature a rich Black Pearl finish, milled faces and slightly less offset than the CG1 chrome irons. Each iron features Cleveland Golf's new Micro Mill technology, a face-milling process that creates the first truly flat-faced iron. Applying Micro Mill decreases shot dispersion by an amazing 50%. The classic shape of the CG1 Black Pearl features a longer blade length, straighter top-line and a more squared toe. The optimized centre of gravity also allows greater trajectory control for skilled players.
CG1 Black Pearl irons also feature a multi-layer, micro-coating that drastically reduces blinding glare while allowing the club to maintain its soft feel and resistance to rust. The metal is infused with 17 times more carbon than traditional 8620 and 1020 steels. Using a unique process, microscopic carbon spheres are infused within the molecular structure of the metal. This creates a matrix that is 10% less dense than ordinary steel yet it maintains the hardness and manipulation properties of cast or forged carbon steel. These density relieving spheres within the CMM metal also dramatically damp vibration offering a pure, soft feel never before achieved in any golf club. The new CG1 irons take traditional blades to a new level of feel and performance.