The LEVITON LSTK4 Circuit Directory Labels set includes 42 high-quality labels designed for easy identification of electrical circuits. These labels are made from durable materials, ensuring they withstand wear and tear in various environments. Each label is clearly printed for easy readability, helping to enhance safety and organization in electrical panels. The LSTK4 labels are compatible with standard circuit breaker panels, making them a versatile choice for both residential and commercial applications. Their easy application process allows for quick installation, improving efficiency in labeling.