20mm Single Figure Base. (Actual diameter is 18.75)

I have not printed this yet, I have my printer on the way just making items, I have created 2 versions of the base, each is 18.75mm across the same size a 2 cent euro. One base has a lip .25mm high and .375mm thick. The center of both bases have a 5.25mm wide x 1.25 deep hole for a magnet (https://www.amazon.com/Multi-Use-Refrigerator-Magnets-Science-Crafts/dp/B073JZ42VJ/ref=sr_1_5?crid=32NTHC60QSYOE&keywords=5mm+x+1mm+neodymium+magnets&qid=1547864268&sprefix=5mm+x+%2Caps%2C229&sr=8-5).

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