Graphite Design shafts are developed with a philosophy that requires new technologies that are tested and proven on professional golf tours. Graphite Design’s latest technology, X Directional Technology (XDT), can be found in the new G-Series line of wood and hybrid shafts. X Directional Technology incorporates the use of the already proven Graphite Design MSI (Material Stiffness Integration) design method as well as this new and unique application of graphite fiber ply angle alignment throughout the shaft structure. During the development phase of XDT, measurable performance gains were discovered through a more balanced distribution of the graphite fiber angles within the piles of the shaft design. This proprietary application of XDT has made the new G-Series the most balanced, versatile high performance golf shaft available today.