4-Way Metered Airbrush Manifold - Individual Airflow Control - 1/4" BSP Inlet, 4x 1/8" BSP Outlets4 Way Airbrush Air Hose Splitter and Regulated Metering Manifold. Use multiple airbrushes from a single air supply hose Includes a 1 4'' BSP female inlet and 4 1 8'' BSP male outlets that allow you to split your air supply up to 4 ways Each air outlet has its own air regulation valve knob to customize the pressure to each of the hose splitters Attach to airbrush hoses with 1 8" BSP size fittings, such as Iwata, Devilbiss and Master Brand airbrushes