The primary function of a carb cap is to regulate airflow and pressure in the dab rig, allowing for more efficient vaporization of the concentrate at lower temperatures. Carb caps come in various shapes and materials, including glass, quartz, titanium, and ceramic, each offering different benefits. Some are designed specifically for use with certain types of nails or bangers, so it's important to choose one that fits well with your dab rig setup.
