e-Cigarette cartomizers, Disposable Atomizer that are threaded for almsot any device that utilizes Boge Revolution V2 threads. A cartomizer is a one piece cartridge and atomizer contained in a single unit. You fill it with your favorite e-Liquid, use it for 2-3 days and dispose of it. For you techno e-Cig geeks, they measure 2.7 Ohms resistance. For non-techno e-Cigarette geeks this means they provide a better vaping experience at 3.7v than most normal cartomizers or e-Cigarette atomizers.