This .5mm nozzle gun is slightly bigger than the standard gun that comes with our system. It allows more room for thicker metallic airbrush colors - or for those that like to mix luster dusts with alcohol to make their own color. Please still be aware that some dusts/powders are simply not meant to be mixed and used in an airbrush gun, and can cause clogging. Gun measures 5.5" from nozzle to tail Comes in protective case with a dropper and wrench for disassembly. Not compatible with a dual-action compressor. Suitable for systems that are single-action and have a slide-on hose attachment, like the Cookie Countess Airbrush System. Comes with a gold handle so you can easily tell it apart from your other guns.