This thing is a tool measurement probe for CNC. The top part has been designed to be machined, but can normally be 3D printed.
Please note that you need to add 4 M3 threaded inserts, a microswitch and a metal rod 10 mm in diameter and 30 mm long. The metal rod is used to press the microswitch.
The author marked this model as their own original creation. Imported from Thingiverse.