Grav Labs Helix - Multi Kit PipeCustomize your smoking experience with the versatile 3 in 1 Multi Kit Pipe by Grav Labs Helix. With up to three interchangeable bowls, including a water bubbler, spoon pipe and one hitter chillum, the Multi Kit Pipe is one of the most versatile glass pipe products available. The proprietary Helix funnel shaped Venturi chamber body with aerodynamically oriented 3 micro holes creates a swirling vortex of smooth smoke for a cleaner and smoother smoking