Dimensions of the revomaze

[Coloradobluesguy]

I need to have a new foam insert made for my puzzles can anyone give me the dimensions of the puzzles so
I can properly have the foam cut, it’s a lot harder to do by hand then you might think if I was to lay the puzzle in vertically what would be the diameter I need I am guessing
2 inches or so but need a exact diameter

[Barcared]

Circumference divided by pi

[dasrevo]

diameter=23.87 mm
circumference=75 mm
length=103.60 mm