Middle finger ring, "anti-weapon"

This is the anti-weapon! for the viral "The middle finger ring", that can be downloaded for free here:
https://makerworld.com/en/models/806923#profileId-753973

STOP, that's enough..!
(The ring is also perfect when the boss comes in and gives you more tasks, STOP!)
Or at the bar, when that someone simply does not understand.. STOP!

You need a spring, from an ink pen and its a good idea to add some glue to the spring, but not necessary