Enjoy twice the spinning action with the GRAV® Large Circuit Rig. Its angled intake hole creates a powerful centrifugal force, causing water and vapor to spin rapidly. This results in smoother hits, with the twin stacked chambers enhancing the effect. No more splashback worries, as the sharp bend in the mouthpiece keeps all water contained within the rig. Comes with a 14mm female-jointed heat-tolerant quartz domeless nail. Simply add 0.5" of water and start vaping.