Made In The USA Handcrafted From Medical-Grade Borosilicate Glass Packaged In A Sleek Collector's Case Inline Percolator 7 mm Thick Optimal Flavor Transfer Via Quartz Banger Superior Airflow The Higher Standards Heavy Duty Rig is engineered specifically for the water filtration of concentrates. This durable, medical-grade borosilicate glass rig has been handcrafted for powerful, reliable performance, and features a quartz banger for optimal flavor transfer. With slits on its diffused stem that create fine bubbles for a smooth draw, the Heavy Duty Rig boasts superior airflow and an airtight seal. Each Heavy Duty Rig is sold in a reusable collector's case for safe storage and transport, and includes a 14 mm quartz banger, premium silicone concentrate container, small tool, and large tool.