Wishing sterling single length irons
I believe you mean Wishon Sterling single length irons. I have no idea what the original shafts were. I’m pretty sure the hosels are .370. You can use any graphite with the proper tip diameter that would fit your game. If all the head weights are the same, which they should be, and if the hosel ID is .370, you could take any .370 tip graphite and trim for the flex and length that fits you. All the shafts would be trimmed the same way.