Vaporesso's GTM Core Coils, are an EUC style coil designed to maximize the flavor and vapor that only the Cascade Tank can produce. Changing your coils has never been so easy with this plug and pull design. Simply pull the base of the coil to remove from the segmented coil chamber and plug your new GTM core into place. No fuss and no mess. These coils are available in two styles, both of which provide expansive wattage ranges to suit all of your vaping needs.