Life is all about choices. ExStax, a cannabis technology and extraction company from Arizona just released the first stackable dual cartridge system. Compatible with existing .510 cartridges and batteries, the innovative ExStax cartridge design is available in .3, .5, .7, and 1.0 ml “stacks.” The custom aperture holes allow for different liquids, revolutionizing vape retail. For the first time ever, consumers can mix and match, combine, or, stack their cartridges, creating a completely unique personalized vape experience.