Vallejo Model Air Dark Slate Grey acrylic airbrush paint in 17 ml bottles. Water-based matte acrylic developed for airbrush spraying. The Model Air range includes a comprehensive selection of military colors from WWI, WWII, and modern periods. Formulations are derived from detailed analysis of historical military paint records and reference materials. Apply directly or dilute with Vallejo Airbrush Thinner or Flow Improver. Recommended procedure: prime the surface and build color with successive thin applications. Dries rapidly with excellent flow, creating a tough, uniform finish that retains surface detail. Airbrush pressure range: 15–20 PSI (0.5–1 kg). Can also be applied by brush. Maintain airbrush equipment using Vallejo Airbrush Cleaner. Non-flammable and contains no solvents. Comes in 17 ml (0.57 fl oz) bottles with integral eyedropper.