Tour Edge Exotics E721 Single Iron This ultra-premium extreme distance iron is being led by innovation breakthroughs by Tour Edge, most notable the new Diamond Face 2.0 and the VibRCore Technology that provides the ultimate in power and feel. Dual VibRCore Technology- The Exotics E721 Iron consists of a high-grade TPU injected into the hollow-body pocket to create new speed-inducing and feel-enhancing technology called VibRCore. VibRCore performance gel is injected into the hollow-body cavity to work in partnership with an extremely thick, yet light TPU layer to dampen sound and shock and to produce faster ball speed at impact. Full-Face Diamond Face 2.0 Technology- The iron features a full-face Diamond Face 2.0 technology; the first time Tour Edge has employed Diamond Face technology into and iron design. 103 different diamond shapes behind the face act as mini-trampolines to create faster ball speeds and expand the sweet spot to outer areas of the face so that the full face of the iron is covered. 360-degree Undercut Design- The design is a 1-piece high-strength steel body with a 360-degree Undercut Design that lowers the CG (Center of Gravity) to produce a higher launch and increased face flexing, ball speed and overall distance across the entire face. Extreme Toe Weighting- Extreme Toe Weighting on the Exotics E721 Iron on the toe of the club elongates the sweet spot for added forgiveness. Power Lofted Distance- The lower and deeper CG allowed the E721 irons to be power-lofted to create distance and lower spin rates, while achieving the same launch characteristics as a standard lofted iron.