nexMESH Pod Cartridge is specially designed for SMOK & OFRF nexMESH Mod Pod Kit. It can hold up to 2ml and adopts waterproof design. Besides, it is compatible with 2 types of coil, 0.4ohm SS316 nexMESH Coil and 0.4ohm A1 nexMESH Coil, which is suitable for both MTL and DTL vaping. However, the pod cartridge does not include the coils, and you need to buy the coils separately. And there is 3 pod cartridges in each pack. Just get one as a spare part for your nexMESH Kit.