The Diamond Series ball sets a new standard in golf ball technology. Every advancement has been built into this super premium Limited Edition ball, including the ultimate Aerodynamic Cast Urethane cover to promote unparalleled stability in the wind along with extreme precision and control around the greens. The Race Performance Compound features a progressive core density that creates ideal and unique spin properties – less spin for more accurate distance of the driver, and more spin when you want it from shorter irons.