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A precise, well-marked site saves you time and money. Heavy-duty Blackburn flags stand up to abuse. Made from a durable 4 mil, mildew resistant plastic, Blackburn marking flags are permanently attached to a sturdy 15-1/2 gauge steel wire or 1/8″ diameter non-conductive, plastic post. These flags are available in a variety of sizes and 13 brilliant colors including those recommended by the APWA.
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