JST - Is it metric or not?

I&#;m looking for some basic headers for some two pin moment switches.
The idea is to just buy a heap of 2 pin sockets that I can solder directly to a board and use some easy to source plug tails to connect my switches.

If you are looking for more details, kindly visit our website.

I thought JST made a heap of those little white ones. And I see the JST-XH series&#;

Like these: https://m.media-amazon.com/images/I/51DJV9ba6TL.jpg

With competitive price and timely delivery, RHT sincerely hope to be your supplier and partner.

But I&#;m having trouble determining the pitch.
Some sites (core included) lists them as 2.54. Others have them at 2.5.

Which is it?

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