The Smok RGC Series Coils for RPM 80 and RPM 80 Pro Kits, you can choose the Conical Mesh Coil or RBA Coil. the RGC Conical Mesh Coil powered by nexMesh technology, designed for a powerful, warm throat hit with massive vapor and amazing flavor. the unique conical structure can maximize the bottom of the airflow inlet and condense the vapor as it flows through the coil to the drip tip, creating an unparalleled burst of flavor.