Do you have a dab rig? Got your banger? Don’t forget the carb cap. Carb Caps enhance the dabbing experience by controlling airflow and thus the temperature of the oil. Without one, the massive airflow cools all of the dabs. The Cap directs the air to one spot in the banger. By moving the cap around, the directed airflow helps maintain temperature in the oil and thus keeps it from cooling too fast. This enables a more efficient and less wasteful use of your materials. They are an essential accessory for dab rigs. Free Shipping on All USA Orders.