Cherry MX/Akko Keycaps

The tester board you can find here:

https://www.printables.com/model/1256858-tester-board-for-cherry-mx-switches 

Heights of the inner Keycap Stems

• Flush: They are flush with the bottom (can touch it) when pressed down.
• Close: They are close to the bottom (won't touch it) when pressed down.
• Hovering: When pressed down, there is 2 mm space to the bottom.

Compatible also with Akko switches.