Features:*Available in sets of 3 pieces, catering to different usage needs, whether for light personal use or more intensive professional tasks.*2.8mm nibs for precise detailing, outlining, and small - scale writing, as well as crude nibs for broader strokes, filling, and highlighting.*Comes in classic black, blue, and red ink colors. These vivid hues are perfect for categorizing information, making important points stand out, and adding a splash of color to your work.*The ink is waterproof, that your markings remain intact and legible even in wet conditions, making these markers suitable for a wide range of indoor and outdoor applications.*These are permanent markers, meaning the ink adheres firmly to surfaces, resists fading over time, and is not easily erased, providing reliable and enduring results for all your marking requirements.