Designed for SMOK Nord 4 Kit, the SMOK Nord 4 Replacement Pod Cartridge comes with 2ml juice capacity. The SMOK Nord 4 Pod has two types to be compatible with different coils of RPM 2 Coil or RMP Coil. The SMOK Nord 4 Pod Cartridge is easy to install and replace. Each pack comes with two pods. Just get it as a spare part.