Cobra Bio Cell Blue Driver Stiff Flex. The BiO CELL+ driver is designed to deliver maximum distance forgiveness and control. Features a new multi-material crown design (T.O.P. Technology) Cell weighting in the crown and face to optimize MOI and CG placement and 8 loft settings that allow you to tune the driver for maximum distance to match your swing. Discover mid-high launch very low spin and blazing ball speeds for optimum distance. 440cc Head. Matching headcover and torque wrench included.