m3 spacer
thingiverse
This is really stupid but super useful. Just change the scale to make it smaller or taller. this one is 2mm tall. You do the conversion.
Download Model from thingiverse
With this file you will be able to print m3 spacer with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on m3 spacer.