Green Crack is a potent Sativa strain made by crossing Skunk #1 with an unknown strain (probably Jack Herer). This fruity and tangy strain is beloved by many consumers for its energizing effects and is said to be a great daytime strain for energy, fatigue, stress, and depression. Cartridge Specifications: Ceramic 510 Thread Borosilicate Glass Reservoir (lab grade glass) ​ Low temperatures recommended for maximum flavor