Replacement shaft for Nike Slingshot 8iron with Graphite Design R shaft? (It may end up being less expensive to buy a replacement club on Ebay).
The Nike Slingshot takes a .370 tip diameter shaft, based on the information we have, but we have no detail on the graphite design shaft that was originally installed (if it was the original shaft). You may be correct in your comment that buying a used online replacement would be cheaper than replaceing the shaft with another Graphite Design iron shaft. There are less expensive graphite alternatives of course, but without knowing the specifications of the one you are trying to replace, it is difficult to make a suggestion.