The Freemax Firelock Kanthal DVC Replacement Coils comes in a pack of three and offers either a 0.15ohm or 0.25ohm resistance options for maximum flavor and vapor production. These coils are compatible with the Freemax FireLuke Tank. Freemax Kanthal DVC 0.15 ohm Coil Specs Coil Ohm: 0.15 Ohm Coil Material: Kanthal Coil Build: Dual Vertical Wick Hole: 4 Wattage Range: 60w-120w Pack Quantity: 3-Pack Freemax Kanthal DVC 0.25 ohm Coil Specs Coil Ohm: 0.25 ohm Coil Material: Kanthal Coil Build: Dual Vertical Wick Hole: 4 Wattage Range: 50w-100w Pack Quantity: 3-Pack WARNING: This is an advanced user item. Use at your own risk! Please ensure that proper precautions are taken when using such devices. Please read and make sure you understand the users manual before use.