I have 6 of the titled used shafts, no head, no grip and would like to use for a customer as a Senior flex (on a limited budget).  They say R flex on shaft. I have included current specs of shafts.  I don’t think there will be a 5 iron in the set.  Will installing a 6 iron on the 5 iron shaft equal an “A” flex.  Or should I buy 1 additional shaft to use on the 6 iron and then use the 5 iron shaft on the 7 iron and continue with the rest of the set.  Hope this information is helpful.

Jim Yachinich Answered question August 24, 2022

I like your 2nd option if your primary concern is flex. Hope your playing length would be long enough.