I'm not sure, but I think you'll have to go to a Titleist dealer,  and have them send in your irons since the dealer sets the prices for new shafts, but I could be wrong about that. It's just a thought Dan, but after you get a quote for new shafts in your irons, check to see what a new set of irons will cost you. It may not cost a lot more to get a new set than re shaft your old ones. If nothing else, it would be a great excuse to get new irons.