Flav's Ultra Refined Premium Oil Cartridges feature quality and consistency along with industry leading potency. Up to 90% THC, these oils are for the cannabis connoisseur seeking a next level experience. With features such as wickless ceramic heating, pre-filled glass cartridge, and universal 510 threading, you'll experience the utmost in flavor, purity, and potency at each and every use. These cartridges are finely tuned for the unique oil viscosities of each strain so you can taste and feel the difference between these exceptional oils.