Hey I'm an american over here and I need help!  GOT IT - See Below
I have some 24mm and 30mm Sanwa buttons.  What size bit do I use to mount them?
7/8 is too small and 1" is too big for the 24mm
1-1/8 inch is too small and 1-1/4" is to big for the 30mm button.
Where do I find the right bit?
Thanks
 3 hardware stores later and I found these hole saws at ACE Hardware.  30mm and 24mm, sweet