Uwell Crown Replacement Refillable Pod Cartridge is designed for Uwell Crown Pod System Kit which is an open-type cartridge. The pods are capable of holding 3ml of eJuice. The top-fill design reduces leakage and you can repeatedly fill your favorite e-liquid and nicotine salt e-liquid. Compatible with the 0.6ohm coil for Restricted DTL and 1.0ohm coil for MTL, using classic double heating wire design, excellent atomization effect, strong flavor release. And adjust the airflow to enhance or weaken the taste by pushing the switch on the side. 2 pieces in a pack.