I replaced the print head on the T500 with a custom setup so that I could have a better hot end and extruder.  I didn't like where the induction probe was sitting in the new setup and I wanted to be able to adjust it so that it was exactly 2mm above the nozzle.

This allows you to use any M12 induction probe with either the stock print head OR a custom print head if you're reusing the metal brackets from the stock one.

The holes fit m3 brass inserts (the heat set kind).