This is a BigTreeTech Eddy Sensor for the laurienzudesign "The Diamond Mount"
https://www.printables.com/model/169465-the-diamond-mount
You need 17mm M3 screws to fix the Sensor.
If you use 19mm M3 screws there is also a spacer to download.
My "y_offset" in Klipper is -38
The author marked this model as their own original creation.