Aerograph Airbrush Brand 1/8" AIR Line Quick Coupler & AIR Regulator Combo Unit Aerograph Airbrush Quick Disconnect and Airflow Adjustment Coupler with 1/8" male and female fittings Provides you hassle-free airflow control to your airbrush! A simple twist of the coupler allows you to control the airflow Screws onto all airbrushes and hoses with 1/8" size fittings, The quick-release action allows you to quickly change airbrushes when you use multiple airbrushes