This a great basic dual cart atomizer for anyone who owns an Ego-t cart style battery and is on a budget. We get it. Not everyone wants or can shell out their hard-earned bucks for a Yocan or Puffco. This little dude is an easy addition to any standard cart battery. It comes with a universal 510 thread, which allows it to interchange with most cart batteries. These atomizers are meant for waxy or buttery-type materials.