Use these Dr. Ph. Martin's Bombay India Inks to offer powerful color for your next project. These highly pigmented India Inks not only remain lightfast and permanent, but are also totally waterproof when dry. They adhere to nearly all surfaces and are non-clogging when used in pens. Inks can be diluted with water and used with brushes in traditional watercolor techniques or in dip pens, technical drawing pens, and airbrushes.Details:Includes assorted colors0.5 fl. oz. (15 mL) each12 inksLightfast and permanentAll colors are transparent except for black and white which are opaqueWaterproof when dryContents:YellowRedMagentaGreenBlueBrownBlackWhiteVioletBright redTealGrass green