Badger Air-Brush Company Stock Number 41-034 Spray Regulator - Medium (size 2) for Model 155, 175, and 360 is a brass component with a bright nickel plated finish that attaches to the front of the airbrush. The spray regulator guides the air over the tip of the needle for proper atomization and siphoning. The 41-034 spray regulator is compatible with the 41-004 medium tip. Badger Air-Brush parts are proudly made in America.