I have bought these for my X8's. They work fine, about 2.5ohms, single hole, single coil, 40mm tall. running 4 each X8's right now.. no problems
can you compare them to boge or smoktech? i've been using them for about 2 years now and im very very pleased by both. i guess the reason some people don't like carto tanks is because they somewhat get the wrong cartomizers which don't work, get flooded and so on.
so can you tell me how these perform in comparison to boge or smoktech?