The water pipe adapter / WPA for Arizer Solo is a great addition to your vaporizer if there are other water tools that you would like to use while you are vaping. This product is designed for the Arizer Solo but it also suits Arizer Air and Air 2 perfectly. While this water pipe adapter is not necessarily essential, it will definitely enhance your general vaping experience and let you discover new textures. The product includes one (1) Frosted Glass Aroma Tube for connecting third-party glass attachments. The glass tube has a compact and durable design and is available in both 14mm and 19mm lengths.