Originally Posted by
HillRider
If the nut is still in there no puller is ever going to fit. A thin wall 14 mm is the most likely size. There were a few 15 mm nuts/bolts but 14 was more common.
+1
However, most good quality (Craftsman) sockets will fit on them. They look like they'd be too close, but they fit. I haven't found one yet that my set won't fit.