Hobby (X-Acto (TM) ) Knife Case

This is a case for an X-Acto (TM) or similar hobby knife.  It has an internal diameter of 15mm and an internal length on 152mm.  Long enough to hold the knife and its blade cover.  There are ridges on the case and cover to keep them from rolling away.  X-Acto is a trademark owned by Elmer's Products, Inc.  The picture showing the case and the knife is an older version of the case.  The current version has the ridges to keep it from rolling around.