Based on Sneaks and Boogies designs. I added an imperial sizer too. Made them the same size so you can clip them together.
UPDATE: SEP 2022 - Added a fractional version.
UPDATE:MAR 2023 - New Improved Fractional Version
https://www.printables.com/model/414252-fractional-screw-and-bolt-sizers
The author remixed this model.