Grav Labs STAX Helix Mouthpiece - Choice of colors

The Helix mouthpiece for your STAX mix and match bong kit features Grav Labs's signature Helix funnel-shaped Venturi Chamber, with micro-holes at the shoulders of the curves angled in the same direction to create a swirling vortex of cooler, smoother smoke that's fascinating to watch and easier on your throat and lungs! From Grav Labs in Austin, Texas, the STAX Helix Mouthpiece is made of 5mm-thick laboratory-grade borosilicate glass, with a 34mm ground joint at the bottom to fit on top of STAX bases or filters. The STAX logo is featured in black and blue on the tube.