Joel Halen is legendary for his authentic, pure quartz dab utensils. The newest addition to his quality, high-end functional quartz products are the Halen Round Bottom Bangers. These 100% pure American quartz bangers= feature either a 25mm or 30mm XXL quartz size bucket with a flat top and round bottom which allows for high volume and increase airflow to bring out the best flavor of your favorite oils, shatter, or wax. The design of these quartz bangers allows for faster heating up time and retains heat well, resulting in an optimal low temp dab every time. The beveled, round bottom makes mopping your bucket after each dab easier and more efficient than ever.