Cobra F Speed LD 2008 Driver. Cobra engineers have refined and yet again improved the speed LD Model. The F Speed LD 2008 drivers has had the clubs centre of gravity has been moved in further back for more optimum trajectories. The Cobra F Speed LD 2008 driver if for average swing speeds and sits with slight draw bias, providing a much higher level of performance. The F Speed LD 2008 range is aimed at those of you with swing speeds in the range of 87-108 mph. The F Speed LD driver comes fitted with a g raphite design tour AS YS 62g shaft.