The FOUR's 14mm ceramic heating chamber which holds almost 1 gram of your favorite dry herb, and a maximum of 12 uses and the vape chamber is among the biggest in class, if not the biggest, you get only the best out of this device. It's USA Dispensary approved and recommended! It is made of one solid piece of aircraft style aluminum with an absolutely controlled isolated air flow path, that means air entering the device does not pass over the battery and or electrical components, this isolated air path gives the user purity when vaping by only drawing in fresh air directly into the FOUR super-sized chamber. Patented by Mig Vapor The FOUR Dry Herb Vaporizer kit comes with: The FOUR Glass mouthpiece USB Cable Tweezer User Manual A Brush DISPENSARY APPROVED DISPENSARY RECOMENDED