ok awesome thank you for the size clarification.
im new to carto tanks. so what brand of carto do you recommend for an ibtanked. also i have seen some cartos that have a slim body and some that have the ring at the bottom.
my question is what type of cartos are best?
I like Smoktech laser punched, but that's just me. IBTanked sells cartomizers on the accessories page and the prices aren't bad. I buy my standard sized from them, since I like flanged and it's hard sometimes to find standard flanged.
Back to the question: cartos are the same diameter. They come in different lengths, but what you see for tank cartos are standard (35mm - tube only, the screw isn't measured) and XL, sometimes called "Mega" (45mm - screw excluded).
The number of holes depends on the thickness of you juice. I vape low vg juice, so 1 or 2 holes is fine; very high vg may need 4 holes.
Flanged or flangeless is personal preference for tanks like the IBTank, which has interchangeable top and bottom caps. There are other tanks that required a flange because of a concave bit at the bottom the flange fits into.
Flanged carto:
Flangeless carto: