Grav Labs Bongs
Grav Labs are known for their innovative range of Helix Pipes and Bongs. Utilizing Bernoulli's principle of airflow in a Venturi shape, Grav Labs' Helix pipes feature pinholes in the shoulders of the chamber, all angled in the same direction to produce an aeration process that slows burning, cools and smoothes smoke, and creates a swirling vortex that's fun to watch! The Helix smoke-cooling technology is available in a whole line of glass hand pipes and even bongs and precoolers.