Faucets connecting with 1/2"D IPS or with 3/8"D IPS (Flex lines)

[Geniescience]

Do kitchen faucets come with connections that are 1/2"D or 3/8"D ?
Or could it be either?
I've seen flex lines on new faucets with 1/2" IPS threads.

 

[Terry]

Yes, they could be most anything now.
I've seen 1/2" MIP
3/8" Comp
and 1/2" FIP