{TAIL ~ a ring} with a flattened shape fastened to the upper end of {HEAD ~ the enclosure}, and 
{ TAIL ~ a ring } with a flattened shape fastened to the upper end of { HEAD ~ the enclosure } , and
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH