Grav Labs STAX Straight Natural Base with Built-in Downstem and Bowl

This piece is a stemless cylinder base for your STAX mix and match tube kit! From Grav Labs in Austin, Texas, the STAX Straight Natural base is made of 5mm-thick laboratory-grade borosilicate glass, with a 34mm joint at the top that fits together with STAX perc filters and mouthpieces! The 34mm joint is grooved on the outside to perfectly hold the 34mm joint clip for a more secure connection. Color of joint clip may vary from photo. The 18.8mm joint at the front comes fitted with Grav Labs' classic inside-cut 18.8mm > 14.5mm built-in downstem and a 14.5mm clear glass funnel bowl.