This is a DIY (do it yourself) atomizer for use on any MOD. There are 3 posts. Appropriate kanthall wire must be used to build your own coil. Ohms reader and other tools necessary are not included and appropriate build depends upon battery being used in MOD. Up In Smoke Vapor accepts no liability for the construction and use of any devices where variant electrical components are used to build the appropriate coils used in these atomizers, the modular devices they are used on and the batteries that power them.