I made these larger feet for the xTool M1 so that I could fit an air filter underneath the machine. I modelled them to have the same top and bottom diameter as the original feet so it should be a drop-in replacement.
You can try to pry the washer out of the original foot, or use a standard M4 washer in there. Use the original M4 bolts that come with the machine to put it in place.
I printed it in TPU, but you could print in PLA as well.
The author hasn't provided the model origin yet.