Paint marker with a broad point is designed for writing & detail drawing on glass, paper, wood, clay, porcelain, stone, metal & mirrors. Lightfast, pigmented paint is opaque, xylene-based, lead-free, acid-free, & weatherproof. Paint markers are great for crafting, home & office use. Paint is not recommended for certain types of plastics, leather, metals, finished wood, paper & fabric products. Paint conforms to ASTM D4236.