This tiny serpent packs an incredible bite! The Wotofo Serpent Mini RTA is a rebuildable tank atomizer designed for powerful single-coil builds with maximum flexibility. The 3ml capacity gives you plenty of e-liquid throughout the day - so much more than RDAs! - while still remaining Euro-legal. It's so convenient, too: not only is it top-fill, but you can access the build deck without draining the tank! Airflow is awesome, with 4mm internal bottom airflow and a wide 5mm-bore drip tip. Builds are simple and easy, with PEEK insulators and side-tension grub screws.