HIGHER STANDARDS HEAVY DUTY RIGDESCRIPTION MADE IN THE USA 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 sits on its diffused stem that create fine bubbles for a smooth draw, the Heavy Duty Rig boasts superior air flow and an airtight seal simply put, this