{HEAD ~ An opening} in {TAIL ~ a first end} of the shell enables a male center pin to be inserted into the connector to make contact with the collette 
{ HEAD ~ An opening } in { TAIL ~ a first end } of the shell enables a male center pin to be inserted into the connector to make contact with the collette
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH