DCT Trim Ring

[ChipHead]

I'm running mini-viva novas on a 1000 MAH twist. Can anyone advise whether I should buy the 3.5 or 5 mm trim ring? I've measured from the bottom of the battery threads to the base of the tank and it is almost 10 mm so I'm confused. Thanks.

 

[Aoi~]

the 3.5/5mm measurement is the diameter, not the length of the thing afaik. For mini vivi nova, go with the smaller one like this eGo Chrome Cone for the 3.5 mL Dual Coil Tank Cartromizer.

For comparison, the 5mm one looks like this