This GRAV circuit rig is 5.5" tall and made out of 28mm borosilicate. It comes with a 14mm domeless quartz nail. The intake hole in the center of the twin stacked chambers of the rig creates a "tornado" effect with the smoke, which also cools it down before it hits your lungs. The bent mouthpiece keeps water and debris away from places it shouldn't be. For the best performance, fill with no more than 1 inch of water and get to smokin'!
