Vallejo Model Air Dark Gray Blue 17 ml Acrylic Airbrush Paint (SKU: AV71054) Water-based matte acrylic developed for airbrush application. Drawn from Vallejo's comprehensive archive of historical military colors from WWI, WWII, and contemporary sources. Each shade is backed by expert research into original military specifications. Apply undiluted or diluted with Vallejo Airbrush Thinner or Flow Improver. Compressor pressure range: 15–20 PSI (0.5–1 kg). Suitable for brush application as well. Fast-drying formula with strong adhesion and superior detail definition. Non-flammable and contains no solvents. 17 ml (0.57 fl.oz.) bottle with eyedropper. Maintain airbrush equipment with Vallejo Airbrush Cleaner.