Deadhead Chemist vape cartridges have no MCT, PG, PEG, VG, Vitamin E Acetate, or any other possible fillers that are used to stretch the product. Deadhead Chemist’s distillate is lab tested and flavoured with all natural terpenes. The cartridges are tested for arsenic, cadmium, lead, mercury, and pass all tests for heavy metals. They are 510 thread and 13omhs. Available in 1.2 gram glass cartridges.