Solid orange marking flag, 4 in. by 5 in. on 18 in. wire staff. Presco high-quality Solid Marking Flags are ideal for aboveground marking in a variety of industries. From utility construction to line locating, hardware to forestry, landscaping and lawn care to pet containment - these flags ensure consistent communication and long-lasting visibility for your project. Wind tear resistant for high performance at or below -40 F.