The Roof Edge Delineator Cone system from TrafFix Devices is designed to provide a quick and easy OSHA compliant Roof Warning Line System. Roof Edge Delineator Cones are made of Low Density Polyethylene plastic for increased durability in all weather conditions and the cones can be stacked for easy transportation and storage. Each Cone features a 30lb Recycled Rubber Base that easily drops over the cone for quick setup and will keep the cone in place and not damage the roof. The Roof Edge Delineators can be stacked with or without their bases. Delineator Cones are available with and without Reflective Sheeting.