Pump-action, fiber tip, oil-based paint markers for use on porous and non-porous surfaces including stone, wood, glass, plastic, metal, leather, ceramic, marble, granite, glossy surfaces, paper and more. Ideal for heavy-duty industrial and professional applications as well as for personalization and decorative purposes. Quick-drying paint resists water, sunlight, rough handling and various chemicals. It's weather-proof, fade-proof and acid-free making it archival safe. Ergonomic rubber grip for added comfort and a durable pocket clip on the cap. Ergonomic Rubber Grip. Marker Ink Type: Permanent; Marker Tip Type: Bullet; Marker Tip Size (text): Medium; Marker Color(s): Black.