Three piece set of arc shaped, 5/8" diameter steel rod that is threaded on each end and once held together a redwood water tank that had ~ a 15' diameter, so if you reconnected the three pack together, you should end up with a circle that's about 15' across. Length listed is tip to tip across, not following the curve. Dimensions are approximate and might vary +/- a foot on the length. Photo may be representational.