The SMOK V12 Prince X2 Clapton Replacement Coils are fitted with Dual Clapton-styled coils (2 kanthal wires wrapped around each other into one coil) wicked with pure organic cotton. They feature huge cloud production and tasty flavor! The X2’s are a great coil option to keep your TFV12 Prince Cobra Tank producing great vapor. The V12 Prince X2 Clapton Coil has a 0.4 ohm resistance coil, and is rated for 40-80W. The Dual Clapton expands the heating surface while making the heating process an even and quick process for awesome vapor production.