The Arizer Air/Solo Screen Pack has six high quality, stainless steel filter screens that fit Arizer Glass Aroma Tubes for the Solo, Air, Solo 2 and Air 2 vaporizers, found in the Arizer accessory lineup. Arizer stems come with a built-in glass screen, but these metal screens are good for people who like to chase clouds with a finer grind with their vaporizers. Glass aroma tubes are a big reason Arizer vaporizers are known for pure taste, and metal screens can slightly mute that taste.