The Atmos Protank is made for use with E-Liquids and other oils. It features removable parts and a durable glass body with 1.5ml capacity. It's bottom coil atomizer can be swapped out when replacement is needed and delivers great vapor performance. Both types of the Atmos Protank utilize 510 threading and can hold a generous amount of liquid. The version 2 model includes an improved atomizer and removable mouthpiece. Note: Features 510 threading.