SKILCRAFT® - NSN2074168 Pump-action, fiber tip, oil-based paint markers are ideal for use on porous and nonporous surfaces including stone, wood, glass, plastic, metal, leather, ceramic, marble, granite, glossy surfaces, paper and more. They are ideal for heavy-duty industrial and professional applications as well as for personalization and decorative purposes. Quick-drying, vibrant-colored paint resists water, sunlight, rough handling and various chemicals. It is weatherproof, fadeproof and acid-free, making it archival-safe. All medium-point markers have a medium-sized bullet tip and wide-style barrel. Ergonomic rubber grip adds comfort to your writing. Barrel also has a durable pocket clip on the cap for convenient attachment and carrying.