The Pax 2 Flat Mouthpiece (2-pack) can be used as an original spare or a replacement flat mouthpiece for the Pax 2 Vaporizer. Whether you want a few extra mouthpieces, or you need to replace the original, this product is ideal. This is an Original Equipment Manufacturer (OEM) product, meaning it is an official Pax Labs manufactured accessory. Each order of this product includes two pieces of flat mouthpiece, which are guaranteed to fit your Pax 2 like the original. This product is compatible with the Pax 3 unit.