Collaborated with Vapnfagan, Augvape released the BTFC RDA Tank Atomizer, which means B for Bottom Airflow, T for Top Airflow, F for Flavor,C for Clouds. The Augvape BTFC RDA comes with two airflow system including top airflow and bottom airflow, the top airflow is for large clouds and if you want to flavor chasing, the bottom airflow is good choice to you. You can also use top airflow and bottom airflow at the same time that bring massive, dense clouds. With 10mm deep juice well can store more e liquid to satisfy your daily vaping. Augvape BTFC RDA Tank is equipped with dual slant posts for DIY fun, which is easy to build kinds of coils and four holes allow bottom airflow to hit coils directly. Augvape BTFC with 25mm diameter utilizes the derlin dip tip and frosted long drip tip for you option, besides, the peek insulator can prevent overheat give you better vaping experience.