Badger Air-Brush Company Sotar Number 1 Spray Regulator, Fine Use with Badger Air-Brush Company Sotar 20/20 airbrush 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 size of the spray regulator opening is .030-inch Badger Air-Brush parts are proudly made in America