The MARKAL 96915 Blue Marking Crayon is engineered for high visibility and precision marking on various surfaces. This crayon features a durable wax formula that adheres well to metal, wood, and concrete, making it ideal for construction and industrial tasks. Measuring 5/8" in diameter and 6" in length, it is easy to handle and perfect for both indoor and outdoor use. The crayon is water-resistant and fade-resistant, ensuring that your marks remain clear over time. Ideal for professionals, it meets industry standards for quality and performance.