.STL files and more info:
https://www.thingiverse.com/thing:546...
Filament used: (not affiliate links)
Black filament:
https://www.amazon.com/SUNLU-Filament...
Grey filament:
https://www.amazon.com/OVERTURE-Filam...
Brown filament:
https://www.amazon.com/OVERTURE-Filam...