If you're looking to keep that new Sense Cyclone Tank chuckin' vapor, then you'll definitely need replacement coils, as it is normal maintenance to any tank. Granted, these replacement coil heads can go a long distance before they need to be changed, due to its incredible coil design and fast wicking abilities, but to continue receiving that enormous vapor production and stellar flavor increase, you'll need these Cyclone Coils. These Cyclone Coils come in a 5-pack and are offered in a resistance of 0.2, 0.6 ohms and NI200 for temperature control. They utilize Kanthal wire and Japanese Organic Cotton for a pure and clean taste.