The 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. Formulated to create a vibrant, polished stone look. Features a precision tip on each bottle. This package contains three 0. 5fl ounces/ 14. 78 ml plastic bottles of alcohol ink. Conforms to ASTM D 4236. Warning: Contents flammable. Adult use only. Made in USA.