A carb cap is a small accessory used while dabbing to regulate the heat and the air pressure and flow of the dab, which helps vaporize the wax at a lower temperature, preserving potency, flavor, and your lungs. It is a dome-shaped device that covers the top of a dab rigs nail or banger after the concentrate has been dropped onto it. The carb cap is typically made of heat-resistant materials like quartz, glass, and titanium. The carb cap limits the amount of air entering the banger by creating a vacuum inside that helps vaporize the wax, ensuring a more potent hit and keeping the banger hotter longer, getting you the most out of your dab.

Carb caps come in different shapes, styles, forms, and sizes, but they all hold a similar goal, which is to keep the heat contained and at a good temperature. Some of the popular carb cap designs include bubble carb caps, spinner carb caps, thermal core carb caps, and universal carb caps. Using a carb cap can provide several benefits for dabbing enthusiasts, such as maximizing the potency of the concentrate being consumed, improving the flavor and potency of the vapor, and reducing waste.

To use a carb cap, you need to drop the concentrate onto the nail or banger, heat it, and then place the carb cap over the nail or banger. The carb cap should be lightly placed over the heated banger, and the user should gently spin or lift the cap, depending on the style of the cap.