Is your dab rig not doing it like it used to? Try a new carb cap for deathly flavorful and potent dabs and a cool new look. After placing your concentrate into the nail or banger, top it with the Underworld Carb Cap to create convection, even heating, and improved airflow that will get the absolute most out of each dab. Made from heat-safe glass and chosen at random, these three skull inspired designs will give your dab rig a touch of personality. It's fun to wait and be surprised when you receive either the pirate, skull and crossbones, or grim reaper carb cap.