What is one to do when you cant find the right sized c spanner on ebay...
Try amazon... maybe ...

I have a new to me tool in the shed, Pacific FTV-2S milling machine, but it came bare. No tooling, just a ISO 40 arbor with an unknown collet stuck in it.
So I need to identify the collet and to do so I need a odd sized c spanner.
To the shed!