A carb cap is a tool used in dabbing that restricts airflow to the nail, resulting in better flavor and longer-lasting heating. To use a carb cap, simply place it on the heated bucket after dropping in the concentrate, exhale, and take a hit. Different types of carb caps include directional airflow/carb caps, bubble carb caps, and disc carb caps, each with their own pros and cons. Choose a carb cap based on your personal preferences and the type of nail you're using for best results. Carb caps are commonly used in the realm of dabbing, they are not typically used with bongs or water pipes that are intended for smoking dry herbs.
