presents Retro style with classic type package. Measuring 25mm in diameter with a 5 / 8 milliliter max capacity(8ml glass should be purchased separately). The filp-to-fill top refilling system makes it easy to use and clean. Also comes with three types of pin for different airflow and flavor / vapor productiion. The adjustable bottom airflow makes for smooth as well as effective airflow, provides you a better flavor, bringing the best out of your premium e-juice.