The coupling comprises a housing having {TAIL ~ a first end}, a second end and {HEAD ~ a body} 
The coupling comprises a housing having { TAIL ~ a first end } , a second end and { HEAD ~ a body }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD