Klein Tools' High Visibility Blue Chalk features fade and water resistance. Long-lasting visibility in sunlight with our fade-resistant chalk ensures marks remain vibrant over time. The water-resistant formula prevents washing and bleeding away in wet conditions, providing durability in challenging environments. Each 14-Ounce (396 g) bottle offers ample chalk for extended use. For effortless refills, pair it with Cat. Nos. CHLK100, CHLK00, making your marking tasks efficient and effective.