Cool Carb CapsThis Triple Barrel Carb Cap is made to fit most quartz and titanium banger nails. Made with borosilicate glass and comes in assorted colors which may vary. These triple barrel carb caps provide directional airflow while you are dabbing and the other end has a stable base for the carb cap to stand on its own when not in use. Being able to direct the airflow helps ensure that you get the most efficiency with your concentrates and they get completely vaporized. Diameter measures 30mm wide.