AIRFLOW RING DESIGN POINTS
·Able to adjust without taking the tank out of the mod!
·The best air impermeability on pre-build coil tanks ever!*
* Tightness somatosensory airflow:
less than 0.8 on TMD BORO
less than 1.0 on TMD DotTank
Max airflow equal to 3.5~4.0mm