Grav Labs STAX Extension Module - 12 inch

Grav Labs STAX Extension Module - 12 inch

The Stax 12″ Extension allows you to instantly add more volume to your Stax Piece your STAX mix and match tube kit! From Grav Labs in Austin, Texas, the STAX Extension is made of 5mm-thick laboratory-grade borosilicate glass, with a 34mm ground joint at the top and bottom to fit in between STAX bases and mouthpieces, or stacked with more filters! The 34mm joint is grooved on the outside to perfectly hold the 34mm joint clip for a more secure connection.