The Yellow Perimeter Warning Line Pennant Set by Tie Down Safety complies with OSHA 1926.501(b)(1) and was designed for the Tie Down Galvanized Warning Line System. But this product also works with any perimeter warning line system! This warning line flag set also includes 105’ of high-strength rope with vinyl yellow pennant flags. The durable warning lines are easy to use and quick to set up. Tie Down Safety maintains high standards and quality control through quality raw materials and components made in the USA.