Dr. Ph. Martin Bombay India Inks delivers powerful ink in a convenient glass dropper bottle. These pigmented color adhere to all surfaces and can be diluted with water and used with brushes, dip pens, air brushes and technical drawing pens. All colors, excluding black and white, are brilliant and transparent. The black and white shades are opaque and offer excellent covering power. Details:Includes 12 assorted colors1 oz. (28.34 g) bottlesLightfast, permanent and waterproof when dryMade in the USAContents:YellowRedMagentaGreenBlueBrownBlackWhiteVioletBright RedTealGrass Green1 mixing palette