SMOK V8 Baby-X4 Coils features a five-pack of replacement 0.15ohm coils for the Smok Baby Beast Tank as well as the Big Baby Tank. These coils utilize a quadruple coil design made with pure organic cotton and enforced with a double barrel, with a wattage ranging anywhere from 45-60W. Enjoy full-bodied flavor and sweet puffy clouds with these delightful X4 coils! Product Specifications: Replacement coils for the TFV8 Baby Beast and Big Baby Beast ?????Double Barrel????? design 0.15ohm resistance Recommended 45-60 wattage range