Give your dab rig a boost and protect your concentrates with the Shield Potion Carb Cap from Empire Glassworks. The shape of this concentrate accessory is a great fit for most dab nails no matter the size. The tube protruding from the bottom helps you direct airflow, enabling you to get every last drop of concentrate for ultimate vaporization. The Shield Potion Carb Cap is a great choice for any dabber, even if you aren't into video games.