{TAIL ~ The body} of lead may be fixed relative to the outer jacket and the shaft has a portion of reduced diameter which moves through {HEAD ~ the lead} 
{ TAIL ~ The body } of lead may be fixed relative to the outer jacket and the shaft has a portion of reduced diameter which moves through { HEAD ~ the lead }
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 OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD