This is a 18mm inductive sensor mount for for the new E3D Hemera Hotend to be applied to the mount created by Thomas Sanladerer: https://www.prusaprinters.org/prints/12763-e3d-hemera-upgrade-for-the-anet-a8

You can use two small selfie screws on the bottom of the mount where Thomas already has design some useful holes.

If you ise the mounting hole as mine the OFFSET for Marlin 2.0.1 firmware are:

define NOZZLE_TO_PROBE_OFFSET { 33, 51, 0) (add your own Z offset)

I recommend to use PETG since it is stiff and temperature resistant but probably PLA works ok too.

It is a tight fit so you can screw in the sensor.