Unicorn horn for Decathlon Oxelo B 100 kids' helmet

A unicorn horn that attaches to the center-front hole of Decathlon's Oxelo B-100 helmet.

I believe this one is the smaller size (47-52cm), but I might be wrong, and it could also work for both! I have included step files so that you can modify the dimensions accordingly, if need be. They should match the dimensions of the hole.

I recommend using a brim for the tab and screw parts.

To attach, insert the screw part first, then the lock tab. Rotate the tab so that it falls into the square peg below and its corners dig under the helmet's plastic shell, then screw the horn to lock everything together.