In 2004, Dave Daily invented the Gravitron - the world’s first glass gravity bong. He saw the opportunity to take a smoking system people were willing to build for themselves out of very raw materials and make it stylish, safe, and affordable. That vision still drives product design at GRAV, and the Gravitron remains one of our most popular pipes. 
 
Medium Gravitron Specs: 
Designed by: Micah Evans
Joint: 14mm Female
Main material: Borosilicate
Use with: Flower
Height: 9 Inch
 
Lardge Gravitron Specs:
Designed by: Micah Evans
Joint: 19mm Female
Main material: Borosilicate
Use with: Flower
Height: 11 Inch