The Filling Chamber and Mouthpiece for Oglesby & Butler Iolite is an Original Equipment Manufacturer (OEM) product and is an official Iolite replacement part. The replacement Mouthpiece and Filling Chamber features stainless steel threads on the mouthpiece. This product permits direct inhalation of vapor from your device. Frequent use of your Iolite Vaporizer will inevitably cause wear and tear on your filling chamber and mouthpiece which will eventually need occasional replacement. If you think your filling chamber and mouthpiece need to be replaced or you want to keep some spares on hand, this is the product for you! Each purchase includes 1-piece Filling Chamber and 1-piece Short Mouthpiece.