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