The collette shape is such that {HEAD ~ the contacts} between the collette and both the shell and {TAIL ~ the center pin} are substantially at the opening of the first end of the shell 
The collette shape is such that { HEAD ~ the contacts } between the collette and both the shell and { TAIL ~ the center pin } are substantially at the opening of the first end of the shell
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH