The MAS 6406 is a versatile permanent marker designed for bold, clear marking across a wide variety of materials. It features a 5.40 mm felt bullet tip that delivers a consistent line, making it useful for labeling everything from paper and cardboard to more challenging surfaces like metal, glass, foil, stone, wood, and leather. Because the ink is formulated to work even on wet or oily surfaces, you can rely on it in demanding environments where standard markers might fail. This marker uses high-quality, non-toxic ink that is free from xylene and toluene, ensuring a safer experience during use. The formula dries quickly and is both water- and friction-resistant, so your writing won't smudge or fade away. To support long-term use and reduce waste, the MAS 6406 is refillable and comes in an ergonomic body that stays comfortable in your hand during extended tasks.