Did not have any improvement after fitting.
Went to try and get more distance out of my driver. They fitted me with a $400.00 shaft and it did not preform. They invited me back to re-fit and fitted me with a shaft that cost about $200.00. They did not offer any kind of credit for the difference in the cost of the cheaper shaft. Any way the cheaper shaft did not perform either. So I lost a lot of time going back and forth with no improvement in my distance for my driver.