Odyssey White Hot XG 2-Ball SRT. New for 2007. The Odyssey White Hot XG 2-Ball SRTis an extended mallet with a double-bend shaft, full shaft offset, and Saturn Ring Technology (SRT). Combining XG multi-layer insert technology with the weight-shifting science of SRT delivers the ultimate putting experience. The latest generation of White Hot Technology used a multi-layer insert that takes feel, feedback and distance control to the next level. The multi-layer insert in the White Hot XG Series takes two materials with different properties to provide incredible feel and distance control. Discretionary weight is moved to the perimeter of the putter head for a high moment of inertia, better forgiveness and a truer roll. Textured Impact Zone enhances feel and clearly defines optimum impact area.