Each base member is {HEAD ~ a one piece molded plastic structure} having sidewalls, endwalls, {TAIL ~ a central portion} forming a recessed area and four leg receiving sockets 
having
Each base member is { HEAD ~ a one piece molded plastic structure } having sidewalls , endwalls , { TAIL ~ a central portion } forming a recessed area and four leg receiving sockets
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH