Pica Classic Pro Lumber and Industrial Crayon, Blue is a premium quality, permanent marking crayon designed for versatile use on wet or dry wood, metal, stone, concrete, and plastic surfaces. It delivers rich color application thanks to its high pigmentation, ensuring your marks are clear and visible. The crayon features high breaking resistance for durability during use and is paper wrapped to keep your fingers clean. Each crayon measures 12 mm in diameter and 120 mm in length, making it a reliable tool for industrial and lumber marking needs. Model Number: 590/41