The MARKAL 96817 Purple Marking Crayon is designed 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 applications. With a size of 5/8" in diameter and 6" in length, it provides a comfortable grip for extended use. The crayon is resistant to water and fading, ensuring your marks remain clear and legible. Perfect for professionals in the field, it meets industry standards for quality and performance.