*** Hi, I just opened a t-shirt shop. Come see and tell me what you think. And so if you want to support me, you can do it by buying a cool t-shirt.***

https://teespring.com/fr/stores/monkey-3d

This is a box with the shape of a piston. The top is screw to close the box.

You can download the 2 other models here: https://cults3d.com/en/3d-model/home/boites-en-forme-de-pistons

https://youtu.be/IRvDjHTybCA