The basics Iwata Pistol-Grip Moisture Filter attaches directly onto the Iwata airbrush and is the final defense to deliver clean, dry air to your airbrush.  The benefits Though miniature in size, the super-fine 5 micron filter element performs like a full-size filter separator. The uses A clear filter bowl allows a visual inspection of built-up moisture and is evacuated through a spring loaded release valve without taking the filter off the airbrush. The bottom line Comfortable in the hand, this accessory acts as a handle on the airbrush to relieve muscle tension. Fits all Iwata airbrushes only.