Callaway Golf Diablo Edge Irons Set, Set of 8 Clubs (4-PW, SW) Maximized Distance A lower, deeper CG is designed to make the sweet spot more accessible at lower impact locations. This generates longer, more consistent distance and improves accuracy for more greens in regulation. Set Options Theres more distance through the entire bag by opting for matched hybrids in the set where women begin to struggle with their irons. Smooth Turf Interaction The Solid Impact Sole is designed to mitigate the effects of heavy and thin shots and improve the impact location on the face for greater distance. Enhanced Feel and Performance Callaway Golf core technologies like VFT, S2H2, a 360-Degree Undercut Channel and Modified Tru-Bore work together to maximize distance, feel and playability.