Milwaukee 100' Extra Bold Chalk Line is crafted with a high strength braided line specifically designed for use in Milwaukee chalk reels. This line creates an extra bold mark, ensuring visibility on your work surface. Built to withstand tough jobsites, it exceptional durability and strength, making it reliable for repeated use. The integrated metal pull ring enhances its longevity and ease of handling, making it an essential tool for professionals seeking precision and durability in their chalk lines. Model Number: 48-22-3900