The SUBTANK Vertical OCC Coil (Organic Cotton Coil) from Kangertech features Japanese organic cotton in a huge base. Its nominal resistance is 0.5 ohms (subohm) for devices running between 15 and 30 watts, or 1.2 ohms for devices running from 12-25 watts. These coils produce a ridiculous amount of vapor and are currently designed for use ONLY in the Kanger Subtank.