Cleveland CG10 Standard Bounce wedge. Made from a proprietary material called- Carbon Metal Matrix, or CMM. This new material 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. The standard bounce wedge is the best all round wedge fo playability in all types of conditions for all types of players. If its very versatile for players who like to be creative around the greens. The Standard Bounce is also an excellent choice for players who like to play an open or square face out of the bunker and who have an average to slightly steeper attack angle.