SMOK TFV9 Replacement Coils are designed for the SMOK TFV9 Sub-Ohm Tank. This listing features 0.15ohm Replacement Mesh replacement coils. The mesh coil inside the coil head is made of a kanthal material. The kanthal mesh heats up e-liquid evenly delivering great vapor and flavor production. The coils are rated for 40W to 90W but perform their best at 70W to 80W. In addition, these coils are compatible with TFV8 Baby Tanks.