How much difference does shaft flex make in your irons? What shaft flex should you be using in your irons? Extra Stiff? Stiff? Regular? In this video I put a Dynamic Gold 120 S300 shaft against a Dynamic Gold 120 X100 shaft using the Taylormade P760 iron. What will the differences be? Will one go further? Will one shaft spin more? Launch higher? Or will be there be little difference if any? Let’s find out... and let’s do it now.

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