Yonex Ezone NS200 SD Left Driver High Intensity Carbon Graphite for the Core Center of Gravity (CCG) technology Muscle Power Face increases repulsion power for maximum ball speed from any point The EZONE SD drivers 3-piece head construction features a 6AI-4V Ti face and a 6AI-4V titanium body fused to high strength composite graphite crown. Proprietary Yonex NS200 shaft for unmatched quality and greater impact speed