The file 'Pipette Holder For Seachem Bottles 3D Printer Model' is (stl) file type, size is 21.8KB.
This will attach your pipette to your 500 mL bottle of whatever from Seachem. I use Prime and Flourish excel but I'm guessing it will fit most of their bottles.
I use these pipettes
https://smile.amazon.com/gp/product/B073WLCQWD/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
prime_pipette_holder.stl | 263.7KB |