Cannabis cartridges are mainly used for inhaling CBD/THC/DELTA 8/DELA 9 OIL. Most time we use ceramic coil to make the heatint part,and have a 510 thread make it to suitable all of CBD Vape batteries. We designe the cremic coils by the best ceramic material and Adaptability Iron-chromium alloy/nickel-chromium alloy/stainless steel materials. Our team have ample experience in desgin all datas to fit most cannabis oil. such as diameter of oil holes,materials of coils,etc. Our devices has been selling well across the United States,receiving full validation and recognition.