4BO green used by the Soviet Army as a standard for priming, corrosion protection, and camouflage color from 1941-1955. Acrylic – Authentic color with optimized formula for maximum performance with either brush or airbrush. 17 mL jar. Water soluble, odorless and non-toxic. Shake well before each use. Each jar includes a stainless steel agitator to facilitate mixture. We recommend MIG -2000 Acrylic Thinner for a correct thinning. Dries completely in 24 hours.