Plastic stanchions & chain are rustproof & ideal for use outdoors to control crowd flow or as an economical indoor option. Chain threads through post head & is easily snap-locked in place with ball top. Chain may be cut to size as needed. Stanchion base is 14" in diameter & may be filled with sand or gravel (not included) for added stability. No tools needed for stanchion assembly. Stanchions & chain are sold separately.