I have to say that the Wheeler set is very well packaged and useless!!!!!
Buy them from Sheffield, you can find good quality Sheffield steel blades in old ironmonger stores look for the Stanley brand name if it doesn't fit the screw slot FILE it to fit and then finish it off by stoning with an arkansas stone.
The 'Gunsmiths' sets are only okay for hobbiests creating work for gunsmiths.IMHO.