Battery main switch panel mount

I needed som battery main switches, which i bought on ebay
(search for "Car Vehicle 300A Battery Disconnect Switch Master Power Isolator Cut Off Switch")
Nice switches, but i need to be able to mount them in a wall / panel, so i made this to be able to do so.
The hole you need to drill is 55mm (but if you have only 60mm, that will probably do leaving just enough for the screws to grab the panel)

I also made a optional 3th pole add-on which can be put between the mount and the switch if you need a connection pole for the minus lead.(M6 bolt)
The third pole add-on is symetrical so it can be mounted on both sides (or print 2 if you need a fourth pole :-))
"ON - OFF" Letters can be filled in with some white paint.

I printed it in ASA, 0.2mm layers, 20% infill, no supports