TŪL PM Series Permanent Markers (Black, Fine Point, 12-pack) Key Product Features Ink Properties: Bold, intense black ink that is quick-drying, fade-resistant, and water-resistant. Versatile Surfaces: Suitable for writing on paper, plastic, metal, glass, and stone. Design Details: Fine Point: Ideal for detailed drawings, small handwriting, and precise annotation. Silver Barrel: Provides a professional look and features an ergonomic grip for comfort. Functional Cap: The cap color matches the ink for easy identification and includes a plastic clip for carrying.