The VOOPOO PnP X Pods are designed for DTL vaping and come in packs of 2. They are compatible with both the DRAG S2 and ARGUS Pro 2 kits. The PnP X coils are sold separately and are available in 0.15ohm and 0.3ohm resistances.
Once attached to a kit the airflow can be adjusted by simply twisting the pod. This passes through the top of the tank to help avoid leaks. The coils also fit through the hole on the bottom of the PnP X pod by pushing them into place. The filling port can be accessed by removing the rubber bung on the side, then adding e-liquid until almost full.