This 2 part atomiser / cartridge design is what Innokin call their VCAPS system.
It comprises of an atomiser measureing approx 1.5 ohms resistance with an outer sleeve to hold the eliquid cartridge.
The VCAPS after assembled is screwed onto the Innokin Lily Battery which is designed to be a perfect match. The mouthpiece (not included) is then screwed on over the VCAPS and the user is ready to vape.
*Purchase is for 4 Atomiser & Cartridge (VCAPS) only and other items shown are for demonstration putposes only.