With two replaceable meshed coils and an adjustable bottom airflow system, the TFV18 Tank from SmokTech is flexible to change tastes between DL and RDL. The 7.5mL bulb glass tube holds an ongoing vaping experience for you even if you are on the go. To fill the tank, just press the button and rotate the top cap to the side, exposing the filling port, enhancing the security of use and leakage.