The Vaporesso GT6 Coils are specifically designed for the NRG sub-ohm tank system. Featuring a sextuple coil configuration, these coils have a resistance of 0.2 ohm. They are constructed with stainless steel housing and are compatible with wattage settings between 40 and 130 watts, with an optimal range of 70 to 90 watts. Ideal for users seeking reliable performance in their vape devices.