Innokin Zenith D22 Tank Specifications: Simple twist top-fill design 2ml Capacity 22mm Diameter Pyrex glass tank Easy-change coils Uses Plexus and regular coil Precision adjustable air flow nnokin Zenith D22 Tank - The Zenith was a collaboration between popular Vape reviewers Phil Busardo and Dimitris Agrafiotis and Innokin. Phil and Dimitris had identified that while there were many tanks that served vapers interested in large clouds, the needs of vapers who wanted a simple to use but satisfying vape were not being met. The latest version of the Zenith continues to simplify the ease of use of the tank, but also offers an improved performance when used used with the included Plexus mesh coil. If you?ve other more complex tanks before, you?ll find the Zenith an absolute delight! The Zenith features a simple twist-to-open filling mechanism which is designed to make refilling your tank both easy and quick. The design also allows for the coil to be pulled out from the bottom of the tank, which makes changing the coil simple and means you won?t get e-liquid on your hands. With many tanks, when you fill up with e-liquid you can trap juice in the chimney, leading to flooding and a gurgling noise. When you twist to open the Zenith tank, the airflow holes are closed off, massively reducing the chance of flooding.