Internal carousels of the Atik EFW2 filter wheel can be changed. I have 2 carousels, one with 7 filter positions, like the one in the pictures, and another with 9 for smaller filters. Carousels are all the same size. When I exchange them, I need a place to safely store the one not in use and protect it from dust.
The parts close very tightly.
Storage diameter: 166mm.
Lid diameter 166.5m
Printed on a Cartech3D (Argentinian printer) on a 200x200 bed.
The gray one in the pictures was printed using ABS 1.75mm. I guess it can also be printed on other materials.
If you do not configure slicer to randomize the "entry points" for every layer you might need to sand it a bit. I used a standard dremel to customize it a bit.