Carb Caps are a small accessory that attaches to the quartz banger or domeless nail of your dab rig. Its sole purpose is to help the wax vaporize at a lower temperature, preserving potency & flavor. Carb Caps come in a variety of shapes and sizes. Some carb caps have a directional airflow hole, giving you more control over the airflow, some have multi hole vortex shapes which will allow the airflow to spiral in the quartz banger, this also give you the option to use Terp Pearls.