Callaway HX Diablo Tour - golf balls - NEW (Wihte) by Callaway Power Reaction Core is firmer at the outer edges and softer in the center for increased spin control Dupont HPF inner cover produces scoring performance and premium feel Soft ionomer cover provides incredible feel off the club face and more stopping power HEX Dimple Aerodynamics produce 100% surface area coverage for improved ball flight 3-piece design for maximum performance and playability