This is a 3 pack of Vaporesso GT Cores. The Vaporesso NRG GT Replacement Coils present a dynamic coil option for the NRG Sub-Ohm Tank, deploying traditional cotton and signature CCell Ceramic with it's innovative structure. This coil series has been adopted in the NRG, Cascade and SKRR Tanks. Enjoy rich taste and fantastic cloud production. Available is the GT2 0.4ohm, the GT4 0.15ohm, the GT8 0.15ohm, the GT Meshed 0.18ohm, and GT4 Meshed 0.15ohm. See additonal information for wattage ratings.