Dumb question; countertop hole sizes?

[sjh]

Do faucet, soap dispenser and garbage disposal air switch require the same size hole in the countertop?

 

[Jadnashua]

Not always, but they often end up that way. Sometimes, it works out better if they are a bit more optimized as then, they don't tend to move around, which can happen if the mounting nut gets a little loose. It can be a bear to make the hole bigger later if you change to a different item that needs to be mounted. This is mostly related to things like accessories...most faucets use a standard sized hole.