Electrical panel hole cutting tool - GIF

[jdurand]

I sold my hydraulic puller set, still have the first metric to imperial adapter I made for it. A punch got slightly offset going through a hold and bent my shaft. Made another and was more careful. That's a 19mm thread on the large end.

Can't upload the file from this %$#@! Chromebook.

edit:
Ok, on real computer, here's the photo