The Matrix R&D team has created a sub group whose objective is to develop new shaft designs that yield increased speed. Out of this, Matrix Speed Ops Design Group has engineered two mid-launching and mid-spinning shaft profiles, utilizing Gradient Energy Flow(GEF) technology to produce Tour-type trajectory and maximize ball speed. Each shaft has been specifically designed to optimize feel and performance based on swing type and speed. A golf shaft experiences the greatest amount of energy deformation under load. Matrix utilizes GEF (GRADIENT ENERGY FLOW) GEF TECHNOLOGY to enhance the stability of the shaft mid-section to minimize energy loss, transferring more power directly to the clubhead at impact. Features: Utilizes GEF (Gradient Energy Flow) Technology to enhance the stability of the shaft mid-section to minimize energy loss, transferring more power directly to the clubhead at impact. Maru Red has a stout overall profile with an extra-stiff tip section. Ideal for more aggressive, high swing speed players that prefer an extremely stable, firm feel with piercing, controlled ball flight. Click here for Trimming Instructions