sliding puzzle game

Is a puzzle game that I saw. Unfortunately i don't know the name.
The goal is the remove the red sliding inner part from the gray outer part.

You need:
1x shell.stl
1x movingMiddel.stl
6x turning.stl
1x turningEND.stl (to the side where there is the small single notch in the shell)
7x pin.stl (I glued them in)

I wish you a lot of fun with it.