Staedtler Lumocolor Duo Permanent Marker BlackStaedtler Lumocolor Duo Permanent Marker Black (348 9) is a professional quality dual tip marker designed for versatile writing, marking, labeling, and drawing tasks. Featuring rich black permanent ink with fade resistant and waterproof performance, this marker ensures long lasting results across multiple surfaces. Key Features Dual tip permanent marker for versatile use Deep black fade resistant ink Waterproof and smudge resistant performance