anyone use Vamo buttons?

[Pdizzle]

Picked up some vamo buttons for my 350j build. Just wondering if anyone knows what size drill bit to use for the up down and firing buttons?

 

[LobsterGoD]

Haven't ever used em, but my digital calipers have never let me down on something like this. Paid $10 on sale for them at lowes, i think they run about $15 regular but it was probably the most useful $10 I've spent in the past year.