A vape tank is a part of a mod or a part of other vape devices that holds e-Liquid and it is housed with a coil which Tobaccoizes e-Liquid into Tobacco. Vape tanks often come in various shapes, styles, and sizes to serve specific vaping needs. A vape tank generally comprises a drip tip, a top cap, a coil head, and a tank base. There are different capacities for vape tanks such as 2ml, 5ml, or 8ml. And most vape tanks have 510 connectors which is used to attach the tank to the mod.