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. Use for heavy-duty industrial and professional applications as well as for personalization and decorative purposes. Pump-action paint markers with fiber tips deliver vibrant, highly visible opaque colors that make bold, long-lasting crisp lines. Quick-drying paint resists water, sunlight, rough handling, and various chemicals. Paint is also weatherproof, fade-proof and acid-free, making it archival-safe. Markers also have a medium-sized, bullet tip and come in a wide-style barrel. Medium markers include an ergonomic rubber grip for added comfort and a durable pocket clip on the cap so you can attach it to notebooks, pockets and more.