Designed to fit the Micro-Mesh 9-pack 2x2" foam sanding pads
https://www.amazon.com/Sanding-Stopper-Polishing-Perfect-Materials/dp/B000H6EC4C/
In the photos section, you will find a png file that is set up to print on sticker paper using a Cricut or similar machine.
I have also included PDFs of the insert for US Letter and A4 Paper Sizes.
However you print/cut them, the final size of the insert should be around:
2.25 in (57.25 mm) x 3.45 in (87.75 mm)
The author marked this model as their own original creation.