This is an original manufacturer’s part for a guaranteed perfect fit every time. Made using only the highest quality materials to ensure a smooth, clean vapor. Glass Mouthpieces are intended for use with the Arizer Extreme Vaporizer or V-Tower Vaporizer. The Arizer mouthpiece is made of extra thick glass for easy sanitary cleaning. They surprisingly work well with the Iolite Portable Vaporizer, just add a piece of tubing that you can find here.