Mr. Chain Stanchions are an effective and cost-effective crowd control solution for both indoor and outdoor events. Each stanchion post stands 41 inches tall with a 14-inch hollow base that can be filled with sand for added stability. Two c-hooks on the top of each stanchion allow you easily attach plastic chain (not included) and run it in a continuous length. Great for sporting events, parking lots, malls, theaters, construction sites, schools, hotels, and more, these stanchion posts are perfect for forming lines, directing crowds, or restricting access to protect people and property. The lightweight, high-density polyethylene design is made with UV inhibitors for long-lasting outdoor use.