Matrix Maru Green Graphite Wood Shafts - A smooth and consistent stiffness profile creates an incredibly stable shaft with maximum kick energy. Low torque results in great control and feedback for the player. Mid-launch trajectory with mid-spin characteristics that are ideal for a wide range of swing types and speeds. 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 Green has a smooth and consistent stiffness profile, creating an incredibly stable shaft with maximum kick energy. Low torque results in great control and feedback. Mid-launch trajectory with mid-spin characteristics that are ideal for a wide range of swing types and speeds. Click here for Trimming Instructions