The diameter is 23.5mm I've read. I have a Pico already and want to try a Cleito tank with it. Would I have to get the standard Cleito 22 to fit this device? I know that a 24mm tank wont fit for sure. Any help is appreciated.
If you feel comfortable with sanding the battery Cap it will fit. I got my exo and when I tried to put it on I realized it wasn't going to fit. I'm lucky to have a belt sander and it took a couple of mins to get it where it needed to be. Just grind it down flush with the indentions on the battery cap.