Mission Models Paint is U.S manufactured. A large range of colours in a waterbased acrylic. They can be both brushed and airbrushed. When airbrushing please follow the manufacturers recommendation on thinning and polyurethane additives, they do work. Using other products to thin MMP or thinning the paint to a different ratio may result in paint that doesn't adhere or spray neat. Polyurethane is not recommended by MMP for Primer. All colours are in a 1fl Oz/30mL bottle.