These tanks are atomizers which are designed for producing big clouds. Working like a regular vape tank, they work with higher powered setups. They work with replacement coil heads which are attached to the tanks base. You get intense flavor, warmer vape, more airflow and large clouds with sub-ohm vaping. DotMod has produced the best and most innovative sub-ohm tanks and has provided them for you at the lowest prices. Most of them feature adjustable air flow and produce large clouds of vaper to satisfy your sub-ohming needs.