3 x SMOK TFV12-X4 Coils Description Looking for some coil heads for your SMOK TFV12 Cartomizer? Then you’ve come to the right place! We have an excellent value pack of 3 V12-X4 Coil Heads available for you to purchase. The coil heads are available in 0.15ohm and is suitable for wattages between 60w and 220w (Best 100w-170w) which enables you to enjoy a deep, satisfying vape. These coil heads are only suitable for SMOK TFV12.