Elements refill cartridges are designed with ease in mind. Screw your cartridge into your Elements battery, and enjoy! Each cartridge is pre-filled for accuracy and convenience. The specially engineered atomizer, designed for Elements viscous consistency, prevents clogs and utilizes every drop of oil. Every single gram of Elements premium cannabis oil is 100% isolated cannabinoids, full of terpene flavour and free from additives – no propylene glycol (PG) or vegetable glycerine (VG). 500mg thc, universal fit.