If the shaft is a Dynamic Gold the flex is listed on the butt end of the shaft under the grip. Another way to tell is to measure from the back of the heel of the club to the first step. You can do this by placing the driver in the playing position and putting a ruler up against the back of the club, just like if you were measuring for club length, and measure from the ground up to the first step. With most of today's driver designs this measurement will be in the 12.5" range for an R flex and 10.5" for the S flex.
Date published: 2016-08-03