Mayflash Top Row Buttons?

Sorry if this has been answered, but how big are the holes in the top row of a Mayflash stick?

Would a Seimitsu DS-412 fit?

Or would a Sanwa SDM-18/20 be more appropriate?

bump^

No, those holes are only like 10mm wide each.

laugh says 12mm. i getting buttons for those thru him.