Replacement Coil Head Description The TFV12 Prince Tank T10 coils are decuple coil heads. The coils feature a 12 point wicking system for quick cotton saturation to help prevent dry hits even when chain-vaping and to assist with heat dissipation. The coil features a 0.12-ohm resistance and a wattage rating of 60-120 watts, however, SMOK recommends operating the coil at 80-110 watts. The T10 coil is designed to be the Prince coil line’s top performer when it comes to vapor production. Includes three (3) TFV12 Prince X6 replacement coil heads.