Does this fit a DT 350 hub??

It's there a picture missing?

https://www.merlincycles.com/dt-swiss-ratchet-exp-freehub-for-shimano-ms12-306695.html

Officially no. Unofficially I think the free hub might but the end cap is different. Cannot remember where I read that though.

The freehub I just bought for my 350 hub wasn’t an exp type one, so I would guess that one isn’t right. My hub is a good few years old now though, so things may have moved on since then.

You can put the old freehub onto an EXP (though it doesn't look like it seals right) but I don't think you can put an EXP freehub onto an old without machining.

Cool, cheers all