The GT 2 is a Clapton style coil that has a .4ohm reading with a wattage range of 40W to 80W but works best between the range of 55W to 65W.
The GT 4 is a step up from the GT 2 when it comes to power. It has a .15ohm reading with a wattage range of 30W to 80W but works best between 45W to 80W.
The GT 6 is a heavy hitter with both flavor and clouds. It is a Clapton style coil that has a wattage range of 40W to 100W but is recommended to be used anywhere from 70W to 90W
The GT 8 is the king of all GT coils in every aspect. It is a Clapton style coil that has a powerful wattage range from 50W to 110W but works best in the area of 60W to 80W.
All of the GT coils are made for the NRG Tank and are Clapton styled coils. All are made with organic Japanese cotton so you are sure to get the most out of them no matter what kind of flavored e juice you are vaping!