Mr. Chain 99914-4 Safety Green Heavy Duty Stanchion, 3" link x 41" Overall Height, Pack of 4 Includes: 32" pole (3" diameter) Ball top, 16" hollow base that can be filled with sand for extra stability, 41" Overall Height - Made in USA Made of High Density Polyethylene Lightweight, Strong and Durable Will not rust, UV resistant Recyclable