Badger Air-Brush Company 20-102 Sotar Spray Regulator, Fine (size 1), with protective arms is a brass component with a bright nickel plated finish that attaches to the front of the airbrush and is connected to the hold down ring. The spray regulator guides the air over the tip of the needle for proper paint atomization. The protective arms protect the needle from damage. The size of the opening in the spray regulator is .030-inch. This part is also available without protective arms (Badger part number 20-101). Badger Air-Brush parts are proudly made in America.