The Solid Valve Normal Screen Set for Storz & Bickel Volcano is a set of three upper and three lower stainless steel Normal Screens intended for use with the Solid Valve Filling Chamber Insert at the bottom of the Solid Valve Filling Chamber. The set also includes an additional nut and a washer. Having the Volcano Vaporizer Solid Valve Normal Screen Set on hand will make it convenient when you need to replace this important part of your Volcano Vaporizer. Each Normal Screen is made from stainless steel and prevents bits of herbs from falling through. The screen’s advanced micro weave also allows plenty of airflow to encourage a huge amount of vapor.