The Yocan Evolve Plus XL Coils use a Unique QUAD coil technology that utilize 4 quartz rod coils and that are designed for the Yocan Evolve Plus XL Wax Kit. The Evolve Plus XL's four quartz rod coils were made to create giant clouds and big hits, which makes it perfect for cloud chasers. The quartz rod coils produce pure, clean original scented vapor with a great flavor. The Evolve Plus XL coils also come with coil caps to prevent messy leaks. Get your Yocan Evolve Plus XL Coils from Rich Mountain Distribution Today!