This is Authentic SMOKTECH V12 Prince M4 0.17¦¸ Quadruple Coil Head£¬there are 3 pieces per pack. it's for TFV12 Prince Tank Atomizer. Applicable to mechanical mod Brings you silky and rich cloud taste 0.17 ohm Quadruple Coils Brand: SMOK Name: Coil Head Model V12 Prince M4 Wattage Range (30-70W/Best 40-60W) Resistance 0.17ohm Quantity 3