Drip tip size question

I tried reading about it all, but I am still very confused when it comes to drip tip sizes.

I have two Smok TFV8 tanks that came in kits. One with my Procolour and one with my G Priv 2.

The tank on the G priv 2 has too airflow, so I guess it is a different kind of TFV8 tank than the other one I have. Though I see no other differences in them besides the position of the air flow.

I also have a small tfv8 tank that came with my Smok stock v8 baby.

And a TFV12 prince tank.

I want to…

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