This is the standard carb cap that goes with all the 20mm OD quartz bangers that work on a 20mm heating coil desktop enail system. The carb cap features a large carb hole on top and a slim tube to increase airflow to stir the concentrates that is being heated in the quartz banger, the carb cap also comes with a 3" long handle which you can use as a handy dabber.
A must-have item for desktop enail kit users!