This oil rig by UPC Glass was designed specifically for waxy concentrates. It utilizes two percs to deliver a smooth and satisfying hit. The hammer barrel perc starts off the diffusion and the vortex disc will spin your vapor giving it a whirlpool effect. It's bent neck helps prevent splash back and black accents adorn the lip and base of the rig. Stands 8 inches tall and made using thick borosilicate glass in California by UPC Glass.