The Innokin iSub Coils 1.2 ohm replacement coils for the Innokin iSub Tank . Just like the ones that come with the iSub Tank, these replacement coils have the resistance of 1.2 ohm and include Japanese organic cotton. Thanks to the “No-Spill Coil Swap System”, they can be replaced in a matter of seconds and without a hassle. To change the burnt out coils, open the base, remove the old coil and replace it with the new one. Close the base and the tank is ready for vaping again.