JustFog 14 series replacement coils were designed form 14 series vape tanks by Justfog. 

They will fit and are compatible with Justfog Q16/ Q14/ S14/ G14/ C14/ P14/ P16/ P16A atomizer.

Justfog atomizer heads contains only 100 percent organic cottons, and flavor of your e-liquid is way nicer than other cheaper tanks. Regarding life-time of Just fog coil, we can say they have standard life-time depend on e-liquids you are using. 

We only sell full 5 pack version of JustFog coils to ensure you are buying Original Justfog vape coils.