i AM 75 YEARS OLD AND WOULD LIKE TO KNOW WHAT I SHOULD CONSIDER IN A DRIVER SHAFT FOR SWING SPEED OF 70 – 80 MPH WITH 12 DEGREE LOFT DRIVER. THANKS GARB
You probably need an A or senior flex shaft.
Here’s a link to help you find the right shaft based on distance or club head speed. You will find the recommended MPF and it will give you a list of possible shafts. https://www.golfworks.com/mpf-shaft-fitting-worksheet/a/496/
Hope this helps! Michael