Jack of all cannabis, master of euphoria --First Class Canna is pleased to offer their Jack Herer Premium Cartridge. Jack Herer is a Sativa variety, and the First Class Canna team isolates the cannabinoids and terpenes locked in the trichomes of the plant. The result is pure cannabis oil with remarkable flavor and potency. Jack Herer Premium Cartridge contains 92% THC and 8% cannabis-derived terpenes.