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