1/2" Jalli - 12 mm

Blue metal is a crushed aggregate stone (jalli), primarily used in construction, roadwork, and landscaping for its high durability and strength. Ranging in color from blue-black to grey, it is available in various sizes (e.g., 12mm, 20mm, 40mm) and is essential for concrete, asphalt, and drainage. It is often sold by specialized dealers and quarries.