This new king TFV16 tank is equipped with two new mesh coils for the best flavor and the max vapor. By adopting a gigantic bulb pyrex glass tube, TFV16 enlarges the e-juice capacity to a unprecedented 9ml. It implements a sealed top refill system and adjustable dual slotted bottom airflow to produce massive vapor and superb flavor. Also the revolutionary top cap with a secure locking mechanism can effectively avoid leaking problems.