Originally Posted by
sfclearwater
I have never needed a pair of the same size cone wrenches. One properly sized cone wrench and a good box end wrench has always done the job.
I have 9-speed era Dura Ace hubs and the rear requires two 14 mm cone wrenches. Both the cone and the locknut are 14 mm and the locknut has very thin, narrow wrench flats just like the cone. You need two 14 mm cone wrenches on these.