Yocan Flame Coil 5pkThe Little Things Are Important, Too! The Yocan Flame Coil 5pk are essential spare coils made for the Yocan Flame Vaporizer. These 5 pk coils are available in two different types, Quartz and XTAL. The Quartz option offers a dual quartz coil design and allows for a smooth vapor production. The XTAL, however, features coil less design and also works for vaporizing wax concentrates and improving the quality of vapor. The Flame Coils utilizes a 510