I have a Mason by Vaporgate 40mm and I'm running two coils on it but the two coils are double parallel so there are four wires in each wrap on the coils and they are wrapped four time and it is ohmed out at .04 I am running them on a customized Hammer of God box mod and it chunks out massive clouds and the box doesn't get hot at all I can't even fell it warm up at all I want to put two more of these coils on there but idk how safe that is