Vaporesso GT Core Coils are designed to be compatible with most Vaporesso sub-ohm tanks such as Cascade One Kit
 
GT2 0.4Ω Ohm - clapton (40-80W, best 55-65W)
Compatible with the following Vaporesso tanks:
NRG tank
NRG Mini tank
NRG SE tank
Cascade tank (you will need to use the 'GT coil adapter')
Cascade Baby tank
Cascade Mini tank
WATTAGE RANGE 40-80W ( BEST 55-65W)