All the hole saws I see are described in terms of inches 1 1/2, 2 1/4, etc. (not MM)
My conversion of the metric system to inches is horrific, but as near as I can tell, 60 mm = somewhere around 2 3/8"
I was looking for confirmation that this would be correct and that the hole does not need to be made any larger than this.
Similarly 80mm translates to 3 3/16 so I wanted to make sure that 3 1/4" would work alright.