The MARKAL 96917 Black Marking Crayon is engineered for high visibility and durability on various surfaces. This crayon is perfect for marking on metal, wood, and plastic, providing a bold and clear line that withstands harsh conditions. Its unique formula ensures that the markings are resistant to water, oil, and extreme temperatures, making it suitable for both indoor and outdoor use. The crayon's ergonomic design allows for comfortable handling, making it an essential tool for professionals in construction, manufacturing, and maintenance.