I noticed that about a half hour ago, but...
The reason was a discussion of tanks for the PICO (22/23mm max) and the actual TFV4 Micro is 22mm. Someone has both... it fits fine.
But that graphic from SMOK themselves (?) clearly says "24.5mm". Hmmmm?
I don't have the answer, but I gave up on a TFV4 (never had much desire for one anyway) when I saw that the Mini can use the full size coils and heads, unless you have the "backup kit" for it which shortens the glass (and height) but increases the juice volume by using smaller "shorty" coils.
But you can't use those in the full size or the Micro. And they're not sold separately.
Then there's the Micro itself. Yep... its' own coils, and only a limited variety.
Then there's the smaller 19mm "Stick". That's a TFV4 Nano.
And that's where I lost
the will to live interest in the TFV4.
But you're right... the Sticks themselves look good.