Features & Specifications: -Size: 25.5* 51mm -Material: SUS304 -Capacity: 5ml /6.5ml -Resistance: 0.2ohm KA1 Meshed Fe-Cr Coil?50-60W? -Drip Tip: 510 drip tip -Thread: 510 -New style meshed rebuildable tank -Easy to guide e-liquid rapidly, with long life span -Quarter turn top fill system, classic celtic knots design for comfortable grip & bayonet design for easy opening -Knurled grip to assist bottom airflow adjustment easily to bring extremely superior flavor -Changeable drip tip -R coil accessories to build the coil 10 times, cost-saving