Cartomizers are e-cig devices that incorporate both the atomizer and cartridge component to form one handy unit. Evape offers a wide range of these and below are some videos about them.
How to fill CE4 and CE5 Cartomiser and Clearomiser
Smok Tech Dual Coil Cartomizers:
Smok Tech 5ml Dual Coil Cartomizers:
Smok Tech DCT Tank Cartomizers:
CE4 Cartomizers: