This is simply not a cartomizer product. It's really a 3 piece ecig. There's wicking content but It's not necessarily a stuffed cart. It takes advantage of a polyfill ring concerning the thickness of a small nylon washer. perhaps about 2mm thick. The poly washer rests on a small flange https://vyhody-elektronicke-cigar11986.wikimidpoint.com/4737128/elektronické_cigarety_pro_zacatecniky_an_overview