The Bowl Screens for Herbalizer are intended to provide maximum airflow and aid in particulate filtering. These Bowl Screens are manufactured by Herbalizer and are helpful in producing cooler and smoother vapor. Each order includes 6 pieces bowl screens, so you won’t need to buy another pack for a while. They are constructed of stainless steel for durability and high quality. To make the most out of your Bowl Screen for Herbalizer and experience an awesome blast of vapor, once the top screen has accumulated oil and gunk, put it at the bottom of the bowl and set your vaporizer at the maximum temperature.