The Vaporesso  GT Replacement Coils presents a dynamic coil option for the NRG Sub-Ohm Tank and the Cascade Tank series, deploying traditional cotton and signature cCelll Ceramic with it's innovative structure. The flagship coil head is the 0.15ohm GT 8 Core, with a quad-cylinder structure and (wattage range of 50 to 110W. Also compatible with the Vaporesso QF Coils. Comes in a pack of three (3.