Staedtler Double-Ended Permanent Pens are versatile marker pens featuring two tip sizes — a fine tip for precise lines and a broader tip for bold strokes — with permanent, quick-drying ink that writes smoothly on paper, plastic, cardboard, and other surfaces. The fade-resistant, water-resistant formula ensures durable results for art, labelling, journaling, and creative projects. A dependable choice for artists, students, and professionals who need flexible, long-lasting colour tools.