U.S. Barricades FAA Airport Runway 10 x 60' Closure Marker, is made of durable "yellow" UV treated vinyl laminated nylon with brass grommets every 3 feet for stakes or attachment to sandbags. Airport Safety Marker has 2 pieces that are needed for an "X", *Price is per "X". Tested in the most harshest environments, our runway, taxiway closure marker will last for years under the most demanding conditions.