M21-500-488 is a high-performance polyester label strip designed for inside panel markings and general identification purposes. It features solvent-resistant polyester material with a black-on-white color scheme, making it suitable for flat, smooth surfaces where durability and chemical resistance are required. The label strip has a width of 0.500 inches (12.70 mm) and comes in a continuous roll with a total length of 21 feet (6.40 m). This product is ideal for applications requiring reliable, long-lasting identification in environments where exposure to solvents or harsh conditions may occur, such as industrial control panels, equipment labeling, and facility identification systems.