Uwell Nunchaku Tank features 25.2mm diameter chassis with a 5 milliliter max capacity and the new Nunchaku coils. Nunchaku Tank measures at 25.2mm in diameter and features sleek and smart design elements that combine for a universally appealing design. Nunchaku Tank features a Threaded Top Fill Method that unscrews to reveal dual fill ports. The Nunchaku Tank utilizes the Plug and Pull Replacement Coil Family, with a threadless design that features reinforced seals to provide a liquid tight fit and finish. Each coil features a vertical coil arrangement. Two 10mm by 2mm adjustable bottom airflow makes for smooth and effective airflow, and can be fully closed to seal the system effectively. The Uwell Nunchaku Tank is an excellent midwattage tank with superior construction, a convenient Plug and Pull coil system, and ergonomic designs throughout.