Specially designed for industrial environments with high temperature resistance, maintaining clear and stable markings under extreme conditions. Perfect for construction and machinery applications. Features quick drying oil based inks that resists and while providing writing and marking, ensuring long term in wet or harsh outdoor conditions. Versatile Multipurpose Use: Ideal for various industries including automotive repair, construction site, and equipment marking, meeting professional needs. 3MM Line Wide: The 3mm wide tip allows for highly visible markings, quickly covering large areas to improve efficiency in industrial and crafting tasks. Smooth Writing: Delivers consistently inks flowing without clogging, ensuring safe and comfortable use in workshops and factories.