XBB Base Set is a top quality "Professional/Hollywood" base set. * 15" x 15" x 3" regulation size rubber covered foam filled bases. * Universal stanchion, fits both 1" male or 1-1/2" female ground anchors. * Set includes 3 XBB bases, 2 XAO1-1/2" female opening x 8" long steel ground anchors and 3 XPG anchor plugs. * No-bend 100% welded steel stanchion.