Designed for use with Smok's Spirals vape tank, the Spirals coils are available in either 0.3 Ohms and 0.6 Ohms resistances. The 0.3 Ohm coils are built for greater vapour production and higher power, while the 0.6 Ohm coils are made for lower wattage, and greater flavour production. Contains:5 x Smok Spirals CoilsImportant information about Sub Ohm Vaping:These coils are designed for sub-ohm vaping. They require more vaping experience to use safely, and extra care should be taken when using a sub ohm tank and mod. The coils will only work on a mod capable of firing sub ohm atomisers. Please ensure that your batteries can handle the extra power requirements, and that your mod can handle the amps. We also advise not to use any e-liquid with more than 6mg of nicotine, as your vapour may taste harsh. Sub ohm vaping produces a bigger throat hit than standard coils, and extra care should be taken.