Get double the rotation with the GRAV® Large Circuit Rig. The angle of the intake hole causes water and vapor to spin rapidly and form a powerful centrifugal force. This cools the vapor and makes each hit smoother, and the twin stacked chambers multiply this effect. There's no need to...
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The GRAV® Small Circuit Rig is a small piece that packs a wallop. The chamber allows you to build up a big hit, while the intake hole is designed to spin vapor and water rapidly to cool the vapor and smooth out the hit. The sharp bend in the mouthpiece...
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