This durable marker post from Pro-Line combines innovative design with practical functionality, ideal for various applications in construction and utility sectors. Constructed from resilient plastic and featuring a unique triangular profile enhanced with an internal Flex PLUS™ rod, it ensures robustness and stability, capable of withstanding temperatures from -40°F to 150°F. Engineered to rebound after vehicle impact, this marker seamlessly returns to its upright position, enhancing safety without compromising visibility; it offers 360-degree visibility and is easily installable, either buried or slid over an existing metal U-channel post. Each post is labeled with a warning for water pipelines, making it an essential tool for identification marking in environments such as construction sites, parks, and utility infrastructure. Plus, with a generous 10-year warranty, you can trust in its long-lasting performance and reliability.