Originally Posted by Salamandrine

The standard basic cone wrench set was a pair of 13/14mm double sided, and a pair of 15/16mm double sided. For example: (2) Park DCW-1, and (2) Park DCW-2. This will be sufficient for most vintage quality hubs, campy, normandy, etc. You may run into 17mm lock nuts occasionally, but you can use a regular 17mm combination wrench for those. Metric combo wrench set also recommended.