Check the listing for details. Grex Airbrush G-MAC Valve & Quick Connect Coupler Set [GXXG-MAC.P]. Condition: New. Listed at 24.95 USD. Valve Set Overview: Grex Airbrush G-MAC Valve and Quick Connect Coupler Set with Badger Adapter. The Grex Micro Air Control Valve (G-MAC) is an essential tool for any artist or hobbyist who uses a Badger Airbrush. This G-MAC valve allows for precise control of airflow, allowing you to achieve finer detail on your projects. The valve enables the user to make quick and easy adjustments to the air pressure directly from the airbrush, eliminating the need to reach for the compressor. The quick connect coupler allows for fast and easy connection and disconnection of the airbrush from the air hose. This feature is particularly useful for artists who frequently switch between different airbrushes. Features: Precisely produce optimal airflow for infinite control of paint output Designed with a large dial to allow easy air pressure adjustments G-MAC Valve gives you the ability to produce course stippling effects to full atomization Accurately control stippling size while you're painting real-time Quick connect air coupler allows you to switch between airbrushes with ease Attaches to the air inlet of your airbrush, providing superior balance compared to head-mounted airflow valves Includes: (1) Grex Micro Air Control Valve (1) G-MAC Adapter for Paasche Air Hose (1) Quick Connect Coupler About Us | View Store