Smok's TFV9 Tank features 6.5ml e-juice capacity and childproof top cap design, which will provide you long-time vaping and prevent accidental opening of the top cap. The gold-plating 510 thread connector helps to increase rub resistance and strengthen electrical conductivity. In addition, it can make the refilling more convenient and obtain massive clouds of vapor and great taste with large refill slot and central airflow tube. This kit is equipped with two V9 Meshed 0.15ohm Coil that has large heating contact surface area to produce huge clouds and superb flavor with less heat time. TFV9 Tank is also compatible with the full line of V8 Baby Coils.