This Staedtler Lumocolour (medium) Permanent Black pen comes with a history. Staedtler have been making their versatile Lumocolor range of pens for more than 50 years, and it's easy to see why they've been such a success. Whatever surface you need to write or draw on, you'll find a Lumocolor pen to do it. This pen has a fine, 1mm tip, and is filled with high-quality permanent black ink. It's lightfast, weather-proof and waterproof, and won't smudge. What's more, it's dry-safe, so even if you leave the cap off for several days it won't dry out. You'll find it ideal for writing on paper, metal, plastic, fabric, film, glass, wood and just about any other surface you care to mention.