The author remixed this model.
This model is adapted from:
https://www.printables.com/model/432446-finnair-displacement-pipette-holder-with-gecko
I modified the arms with rounded edges to reduce the risk of scratching pipettes or your hands.
I recommend printing it with PETG or ABS filament. I initially printed several copies of the original version using PLA filament, but they became quite fragile after three years.