Crap cap banger are one of the most important components for dome and dome-less dabbing rigs. These bangers are used to control the airflow and to make sure you get the best dabbing experience as possible. Right now, the most popular cap in the market is the crap cap which is well rounded for rig experiences. It has a 1.35 diameter size, and it is available in a variety of different colors. It has also been crafted using high quality borosilicate glass!