There is a cavity inside for loading up on pennies to add weight
https://imgur.com/gallery/NlPFe5A
Unassociated tags: Pixel XL
Printer Brand: Prusa
Printer: i3 MK2S
Rafts: No
Supports: No
Resolution: 0.2
Infill: 5% or Greater
Filament: Prusa PLA blue
The author marked this model as their own original creation. Imported from Thingiverse.