SMOK Thallo/Thallo S Pod Cartridge is designed to be used in SMOK Thallo/Thallo S Pod Mod Kit. It is made of PCTG material. It is available in two types, Thallo RPM 2 Pod and Thallo RPM Pod, each with an e-juice filling capacity of 5ml and features effortless refills. The Pods with the convenient side e-juice refill design, easy to inject your favorite e-juice, the silicone stopper to prevent the juice leaking. Thallo RPM 2 Pod is compatible with the RPM 2 coil series; Thallo RPM Pod is compatible with the RPM coil series. So there will be plenty of options to satisfy your particular vape preference. Get more flexibility with your different coils! Installed in a bottom press-fit manner. The bottom with a strong magnet design for the easy Pod installation and removal. Empty pods do not include coils, three per pack.