Vallejo Model Air IJN Ash Grey acrylic airbrush paint in 17 ml bottles. Water-based matte acrylic formulated for airbrush use. The Model Air selection encompasses military colors spanning WWI, WWII, and contemporary operations. Each color is developed through extensive research into authentic military finishes and documented historical references. Use directly or dilute with Vallejo Airbrush Thinner or Flow Improver. Apply over a primed surface in multiple thin coats for optimal results. Fast-drying formula creates a robust, homogeneous film that preserves fine model details. Operate at airbrush pressure of 15–20 PSI (0.5–1 kg). Brush application is also viable. Use Vallejo Airbrush Cleaner for proper equipment maintenance. Flammable-free with zero solvent content. Supplied in 17 ml (0.57 fl oz) bottles with eyedropper.