Geek Vape ZEUS Nano Tank, featuring a 3.5mL tank capacity, Boost Formula G Coil Compatibility, and dual slotted bottom airflow control ring. Constructed from premium stainless steel, the ZEUS Nano Tank is 22mm in diameter and boasts a threaded top fill system, allowing up to 3.5mL of eJuice within the glass tank capacity. Accepting coils from the Geek Vape Boost Formula G Coil Series, it can deliver delicious vapor from the mesh coils installed in a press fit manner. At the base is a dual slotted bottom airflow control ring, offering MTL or DTL vaping options.