This is a 4 pack of 2ml refillable pods for the UWELL Caliburn and Caliburn Koko pod kit (note: these are not compatible with the Caliburn G pod), available in either a 1.4 or the new 1.2 resistance.
With an internal 1.2 or 1.4 Ohm coil, just fill them with your choice of e-liquid, let them sit for 10 minutes so they coil can saturate and click them into place