These alcohol inks by Ranger are dye based, multi-surface inks. They are acid free, permanent, quick drying and transparent. Create a vibrant, polished effect on non-porous surfaces, such as glossy paper, dominoes, metal, foil, shrink plastic, glass and others. These inks are formulated to create a vibrant, polished stone look. Each bottle features a precision tip.Details:Available in multiple colors0.5 fl. oz. (14.78 mL)3 bottlesTransparentAcid-freePermanent and quick-dryingConforms to ASTM D 4236Warning: Contents flammable. Adult use only.