Marks-A-Lot Permanent Markers deliver a bold, low-odor ink that provides high visibility from a distance on most surfaces including cardboard, metal and plastic. Permanent ink is quick-drying, water-resistant and rub-resistant to minimize smudging. Chisel tip marks in a variety of line widths, from thin to extra wide. Nontoxic marker is great for making signs, posters and banners. ACMI certified (conforms to ASTM D- 4236).