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Swanson Marking Flags are ideal for aboveground marking in a variety of industries. From utility construction to line locating, hardware to forestry, and landscaping to pet containment, our flags ensure consistent communication and long-lasting visibility for your work. Our advanced PVC formula provides endurance against wind chills as low as -40°F, giving you the ultimate in weather resistance. High-carbon alloy steel staffs add tensile strength along with protection against bends and breakage. Swanson Marking Flags are a marking solution that will withstand the elements and provide the safety you need for every job.