shaft flexes

The important question is which shaft will provide adequate launch angle - typically the Kuro Kage, Tensai Blue, or Diamana Red. After that, the flex in any of those shafts would be determined. These are the shafts for slower swing speeds. Getting the flex that works best with your dispersion pattern is the last step. For the price of a new driver, it is worth getting fit for the right shaft (and flex).