The SMOKTech TFV12 Prince X4 Clapton Replacement Coils are yours to have! Built for the TFV12 Prince Tank, SMOK created a replacement coil with a resistance of 0.15ohms capable of 60-220w (Best between 100-170w). The X4 Clapton coils are designed to provide you with an enhanced vaping experience. Full flavor, thick clouds come out of its stainless steel case full of double kanthal clapton coils in a vertical configuration. Wicked with 100% Japanese Organic Cotton, vape juice saturation is at its best!