The AK Interactive Real Colors Marker in RAL 7021 Dunkelgrau is an acrylic paint marker specifically designed for modeling applications. It offers a high-coverage, matte (or slightly satin) finish that adheres well to various surfaces like plastic, resin, metal, and wood. The markers are water and heat resistant, allowing for layering and weathering with other products without damaging the paint. They are also ideal for applying base coats and painting details on models, especially on small scales or for camouflage. 

Key Features:

• Specialized for Modeling: Formulated for use on model kits and miniatures. 
• High Coverage: Provides excellent coverage on various surfaces. 
• Water and Heat Resistant: Durable and resistant to common weathering techniques. 
• Matte (or Slightly Satin) Finish: Offers a finish that can be further enhanced with varnishes. 
• Ideal for Layering and Weathering: Allows for precise application and subsequent weathering. 
• Non-Bleeding: The ink does not bleed or smudge. 
• Non-Toxic and Odorless: Safe for use in a model-building environment. 
• Suitable for a Variety of Surfaces: Works well on plastic, resin, metal, and wood. 
• Specifically Designed for Military Vehicles: This color, RAL 7021 Dunkelgrau, was used by the German Army for vehicles from July 1937 to July 1940