This isn't a cartomizer design. It is just a three piece ecig. There's wicking materials but It's not at all a stuffed cart. It works by using a polyfill ring about the thickness of a small nylon washer. perhaps about 2mm thick. The poly washer rests on a small flange https://elektronickcigaretyprozac42086.wikifrontier.com/7875672/the_best_side_of_vyhody_elektronicke_cigarety