You've stumbled upon the holy grail of bangers. The Grail banger from Pulsar is made of high quality quartz and features a slit in the bottom of the bucket. This unique design allows air to enter through the slit for better airflow and more vapor, it also provides less resistance when inhaling to make for an easy drag on your bong or rig. Pulsar Banger Features: Use: Concentrates Size: 14mm Quartz Grail Banger Bottom Slit for More Airflow and Less Resistance Finished Joint Superior Heat Retention