Vallejo 73660 Surface Primer Gloss Black - 60ml. Product Description Vallejo Surface Primer Gloss Black (60ml. 73660) is a black, water-based polyurethane primer. This primer can be used directly or mixed with, for example, mediums or paints. The primer levels out and dries glossy and hard, preserving details. Perfect for plastics, resin and metals and can be used very well in combination with Airbrush. Surface Primer can be easily cleaned with water. For stubborn dirt we recommend Airbrush Cleaner. NB! Do not mix Surface Primer with alcohol or other solvents, for example