Z Replacement Coils by Innokin available in three different resistances. The 1.6 Ohm Kanthal coil is designed for a cooler vape at lower wattages between 10w to 14w. The 0.8 Ohm Kanthal coil is more suited at those looking for a slightly warmer vape and slightly higher wattages with a more powerful delivery. These coils can be used between 14w to 18w.