The Aspire Atlantis Replacement Coils are available in three resistances 0.3 ohms, 0.5 ohms, and 1.0 ohms and come in a package of 5 coils per pack. These replacement coil packs are only designed for the Aspire Atlantis Tanks. With this coil, the Atlantis Tank can work with all kinds of mods. The redesigned bottom vertical coils are wicked with 100% organic cotton delivering superb flavor production. Enlarged inlet holes allow juice to wick more effectively than the previous versions.