The file 'Aquarium Auto Water Top Off System 8mm 3D Printer Model' is (stl) file type, size is 55.0KB.
This is a basic water top off system for an aquarium, remixed from https://www.thingiverse.com/thing:5420746.
The original design did not have a 8mm version so here it is.
ATO_Bottle_8mm.stl | 126.5KB |