finiti ecig thread size

[vaping_penguin]

hello everyone I have found an excellent deal on finiti ecig kits but the person selling them dosnt know what the thread size is does anyone know? it is a very small connector definitely smaller then 510 any help or guesses would be helpful. i have only used 510 connections so i dont know what is smaller then that so if anyone know that information would also be helpful.
Thank you

 

[skt239]

Does this help?

7.8mm/84mm female batt that takes male carts.

 

[vaping_penguin]

Does this help?

7.8mm/84mm female batt that takes male carts.

do you know what the name of that size is ei. 801,901,ect. the reason i want to find out is i can get 2 batteries and pcc for 3.99 as many as i want. i love cigalikes but if i can't get cartos for them there pretty much useless so i want to find out the connector so i can see if i can find cartos or adapters to fit them.